Recent Additions

rosaP Repository & Open Science Access Portal

This page includes the documents that were newly added to the repository within the last 30 days.

All these words:

This exact word or phrase:

Any of these words:

None of these words:

Language:

Publication Date Range:

Visit our Help Page for additional assistance

Select a Range:

Select a Format:

Custom Search Builder:

Custom Search Box

Visit our Help Page for additional assistance

Showing 81 - 100 of 513 results

HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software]

United States. Federal Highway Administration. Office of Bridges and Structures

2024-05-29 | ZIP

HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Improv ...

01/27/2026

Title : HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software] Corporate Creator(s) : United States. Federal Highway Administration. Office of Bridges and Structures Contributor(s) : Lizewski, Ryan Published Date : 2024-05-29 URL : https://rosap.ntl.bts.gov/view/dot/88716 United States. Federal Highway Administration. Office of Bridges and Structures (2024). HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software]. United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software]" (2024) United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software]" , 2024 Export RIS Citation Information. TY - Software A2 - United States. Federal Highway Administration. Office of Bridges and Structures A4 - Lizewski, Ryan AB - HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software. AB - Improvements made to this version of the software include the following: Implemented new feature: Alternative culvert design analysis. Bugfix for hydraulic jumps with improper stationing when stationing is decreasing. Bugfix WSP profile selection. Bugfix with the report generator using the wrong index. Implement feature request to modify the page orientation, margin size, and line spacing of generated reports. Implement the "Project Headwater Summary Table" report element. Added HW/D to the Culvert Barrel Summary. Added "Essential Data Report" Format. Bugfix for unit conversion on USBR VI stilling basin energy dissipator. Bugfix for the wrong Manning's n value being used in full flow in certain circumstances. Bugfix for losing the constant roadway elevation. Bugfix for iterating on very small flows. Bugfix for issue selecting a user-defined shape with embedment. Bugfix for embedded user-defined culverts losing points and display in front-view plot. Bugfix for broken-back culvert data not refreshing with changes. Bugfix for units and computations with elliptical and pipe-arch culverts. Implemented feature request for a note in energy dissipation that we have culvert protection methods in the Hydraulic Toolbox. Bugfix for interpolation method in determining the inlet control depth. Bugfix for different water surface profile data when comparing the same culvert with different stationing values. Bugfix to handle changes in virtual earth. Bugfix for column headings swapped in report. Bugfix for depressed culvert being applied to a broken-back culvert. Bugfix for designing energy dissipation with a SAF basin that did not converge. Improved the USGS Flow Type chart. AB - By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software. AB - National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time. AN - dot:88716 KW - Culverts KW - Hydraulics KW - Software packages KW - Analysis KW - Design LA - English PB - United States. Federal Highway Administration. Office of Bridges and Structures PY - 2024-05-29 TI - HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software] M3 - Software N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88716 ER -
Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way

Dobson, Richard J.

;

Brooks, Colin

2025-10-06 | PDF

Invasive species can be detrimental to our communities and environment as they can cause economic or environmental harm, including harm to human, animal, or plant health. These species thrive in transportation corridors which can be used to spread into new areas. This project focused on mapping four invasive plant species common reed (Phragmites au ...

01/27/2026

Title : Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way Creator(s) : Dobson, Richard J.;Brooks, Colin;Jenkins, Abby;Berger, Sam;Bilt, Dorthea Vander;Cook, Chris;Lowe, Rebecca; Corporate Creator(s) : Michigan Technological University Corporate Contributor(s) : Michigan. Department of Transportation;United States. Department of Transportation. Federal Highway Administration; Published Date : 2025-10-06 Report Number : SPR-1759 URL : https://rosap.ntl.bts.gov/view/dot/88715 Dobson, Richard J. et al. (2025). Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way. Dobson, Richard J. et al. "Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way" (2025) Dobson, Richard J. et al. "Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way" , 2025 Export RIS Citation Information. TY - Tech Report AU - Dobson, Richard J. AU - Brooks, Colin AU - Jenkins, Abby AU - Berger, Sam AU - Bilt, Dorthea Vander AU - Cook, Chris AU - Lowe, Rebecca A2 - Michigan Technological University A3 - Michigan. Department of Transportation A3 - United States. Department of Transportation. Federal Highway Administration AB - Invasive species can be detrimental to our communities and environment as they can cause economic or environmental harm, including harm to human, animal, or plant health. These species thrive in transportation corridors which can be used to spread into new areas. This project focused on mapping four invasive plant species common reed (Phragmites australis), Japanese knotweed (Fallopia japonica), wild parsnip (Pastinaca sativa), and leafy spurge (Euphorbia esula). The selection of these species was made based on the researchers’ previous experience with mapping invasive species and recommendations from MDOT. Mapping guidelines were developed for each species which includes, drone collection parameters, necessary data layers, classification methodologies, and accuracies of the mapping methods. AN - dot:88715 ET - Final Report: 10/11/2023 – 9/30/2025 KW - Drones KW - Invasive plants KW - Mapping KW - Classification KW - Remote sensing KW - Right of way (Traffic) KW - Plants LA - English PB - Michigan Department of Transportation. Research Administration PY - 2025-10-06 SN - SPR-1759 TI - Identify Mapping Techniques of Invasive Plant Species Within the MDOT Right-of-Way M3 - Tech Report N1 - United States N1 - 2022-0432 Z2 UR - https://rosap.ntl.bts.gov/view/dot/88715 ER -
HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software]

United States. Federal Highway Administration. Office of Bridges and Structures

2022-11-29 | ZIP

HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Bugs a ...

01/27/2026

Title : HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software] Corporate Creator(s) : United States. Federal Highway Administration. Office of Bridges and Structures Contributor(s) : Lizewski, Ryan Published Date : 2022-11-29 URL : https://rosap.ntl.bts.gov/view/dot/88714 United States. Federal Highway Administration. Office of Bridges and Structures (2022). HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software]. United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software]" (2022) United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software]" , 2022 Export RIS Citation Information. TY - Software A2 - United States. Federal Highway Administration. Office of Bridges and Structures A4 - Lizewski, Ryan AB - HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software. AB - Bugs addressed: Addressed a low flow channel calculation in the AOP module causing a crash. Adjusted the display of the selected profile instead of defaulting to the overtopping profile. Fixed the display of the question mark (?) icon for the user’s manual, which did not appear in the Energy Dissipation module for some screen resolutions. Addressed metric rating curves being compared to the invert elevation before being converted. Fixed issue with report generation failing on names with quotes (‘ or “) in the name. Fixed issue where roadway crest was modified when saved and read from a file. Fixed issue where the diameter on an embedded circular culvert was lost when saved and read from a file. Fixed issue where the wrong flow area was computed for a given depth. Fixed incorrect area of pipe arch listed for display. Fixed incorrect geometry for a pipe arch. Improved iteration success rate to 99.8% in testing most problematic cases; a failure caused a decrease in HW with increased discharge. This problem was resolved. Fixed issue where selecting an inlet edge type caused HY-8 to crash. Fixed issue where duplicating a culvert barrel on a crossing with multiple discharges crashed. Modified HY-8 to not allow the user to try (and fail) to generate a report where the filename exists and is locked. AB - Adjusted some language in the user’s manual. AB - Fixed minor issues in the Bridge scour combo boxes. AB - By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software. AB - National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time. AN - dot:88714 KW - Culverts KW - Hydraulics KW - Software packages KW - Analysis KW - Design LA - English PB - United States. Federal Highway Administration. Office of Bridges and Structures PY - 2022-11-29 TI - HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software] M3 - Software N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88714 ER -
HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software]

United States. Federal Highway Administration. Office of Bridges and Structures

2022-04-12 | ZIP

HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Bug fi ...

01/27/2026

Title : HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software] Corporate Creator(s) : United States. Federal Highway Administration. Office of Bridges and Structures Contributor(s) : Lizewski, Ryan Published Date : 2022-04-12 URL : https://rosap.ntl.bts.gov/view/dot/88713 United States. Federal Highway Administration. Office of Bridges and Structures (2022). HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software]. United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software]" (2022) United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software]" , 2022 Export RIS Citation Information. TY - Software A2 - United States. Federal Highway Administration. Office of Bridges and Structures A4 - Lizewski, Ryan AB - HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software. AB - Bug fixes include: Corrected the Froude Number for energy dissipator calculations to use hydraulic depth instead of hydraulic radius. Corrected an issue with a specific multiple culvert barrel calculation. Corrected an issue with flow area calculations in the 'water surface profile data dialog for embedded circular culverts. AB - By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software. AB - National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time. AN - dot:88713 KW - Culverts KW - Hydraulics KW - Software packages KW - Analysis KW - Design LA - English PB - United States. Federal Highway Administration. Office of Bridges and Structures PY - 2022-04-12 TI - HY-8 Culvert Hydraulic Analysis Program Version 7.70.2 [supporting software] M3 - Software N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88713 ER -
HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software]

United States. Federal Highway Administration. Office of Bridges and Structures

2021-06-02 | ZIP

HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Improv ...

01/27/2026

Title : HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software] Corporate Creator(s) : United States. Federal Highway Administration. Office of Bridges and Structures Contributor(s) : Lizewski, Ryan Published Date : 2021-06-02 URL : https://rosap.ntl.bts.gov/view/dot/88712 United States. Federal Highway Administration. Office of Bridges and Structures (2021). HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software]. United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software]" (2021) United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software]" , 2021 Export RIS Citation Information. TY - Software A2 - United States. Federal Highway Administration. Office of Bridges and Structures A4 - Lizewski, Ryan AB - HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software. AB - Improvements made to this version of the software include the following: Added a secondary versioning number. Updated the Quick Start Guide. Upgraded the interface for high pixel density displays and updated interface icons. Upgraded to a new library to export data to the report generator with Microsoft Word format (DOCX). Added an option to set default unit system, outlet control, and exit loss. Added irregular roadway plot minimum and maximum crest elevations in the side view. Increased the number of irregular roadway plot points from 15 to 5000. Added Manning’s n value and plot of critical depth in the tailwater channel. Added feedback to the user when irregular tailwater channel is insufficient for the specified flow. Improved HY-8 tailwater computations to better handle surcharge situations. Added culvert size on the results page. Added Ke value of the inlet edge types and the culvert barrel slope in the Edit Crossing window. Added max shear stress to the AOP table. Provided testing information to the user in the HY-8 User’s manual. AB - By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software. AB - National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time. AN - dot:88712 KW - Culverts KW - Hydraulics KW - Software packages KW - Analysis KW - Design LA - English PB - United States. Federal Highway Administration. Office of Bridges and Structures PY - 2021-06-02 TI - HY-8 Culvert Hydraulic Analysis Program Version 7.70 [supporting software] M3 - Software N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88712 ER -
HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software]

United States. Federal Highway Administration. Office of Bridges and Structures

2019-07-30 | ZIP

HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Build ...

01/27/2026

Title : HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software] Corporate Creator(s) : United States. Federal Highway Administration. Office of Bridges and Structures Contributor(s) : Lizewski, Ryan Published Date : 2019-07-30 URL : https://rosap.ntl.bts.gov/view/dot/88711 United States. Federal Highway Administration. Office of Bridges and Structures (2019). HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software]. United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software]" (2019) United States. Federal Highway Administration. Office of Bridges and Structures "HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software]" , 2019 Export RIS Citation Information. TY - Software A2 - United States. Federal Highway Administration. Office of Bridges and Structures A4 - Lizewski, Ryan AB - HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software. AB - Build Date July 30, 2019. This version does not include new features, but rather: 1) corrects computational issues with embedded circular culverts, 2) fixes many reported bugs, 3) improves computational stability, and 4) updates the user interface. The HY-8 User’s Manual included with the software package (available by selecting “HY-8 Help” in the “Help” drop-down menu) describes the corrections to the embedded circular culvert logic in Section 4.1, Embedment Depth. Please email Eric Brown (eric.r.brown@dot.gov) if you want additional details on the implemented corrections to embedded circular culverts and a complete list of maintenance items implemented in Version 7.60. AB - By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software. AB - National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time. AN - dot:88711 KW - Culverts KW - Hydraulics KW - Software packages KW - Analysis KW - Design LA - English PB - United States. Federal Highway Administration. Office of Bridges and Structures PY - 2019-07-30 TI - HY-8 Culvert Hydraulic Analysis Program Version 7.60 [supporting software] M3 - Software N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/88711 ER -
Enhancing Performance of Intelligent Compaction

Foroutan, Maziar

;

Ghazanfari, Ehsan

2022-08-15 | PDF

A key step toward ensuring the desired long-term performance of pavements in roadways is effective compaction. The limitations of conventional compaction techniques and current density-based acceptance practice in highway construction have led to non-uniform and unsatisfactory compaction of the pavement materials. Intelligent Compaction (IC) techno ...

01/27/2026

Title : Enhancing Performance of Intelligent Compaction Creator(s) : Foroutan, Maziar;Ghazanfari, Ehsan;Ossareh, Hamid; Corporate Creator(s) : University of Vermont. Department of Civil and Environmental Engineering;University of Maine. Transportation Infrastructure Durability Center (TIDC); Corporate Contributor(s) : United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2022-08-15 URL : https://rosap.ntl.bts.gov/view/dot/88710 Foroutan, Maziar et al. (2022). Enhancing Performance of Intelligent Compaction. Foroutan, Maziar and Ghazanfari, Ehsan and Ossareh, Hamid "Enhancing Performance of Intelligent Compaction" (2022) Foroutan, Maziar et al. "Enhancing Performance of Intelligent Compaction" , 2022 Export RIS Citation Information. TY - Tech Report AU - Foroutan, Maziar AU - Ghazanfari, Ehsan AU - Ossareh, Hamid A2 - University of Vermont. Department of Civil and Environmental Engineering A2 - University of Maine. Transportation Infrastructure Durability Center (TIDC) A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - A key step toward ensuring the desired long-term performance of pavements in roadways is effective compaction. The limitations of conventional compaction techniques and current density-based acceptance practice in highway construction have led to non-uniform and unsatisfactory compaction of the pavement materials. Intelligent Compaction (IC) technology has the potential to significantly improve the consistency and uniformity of compaction. However, despite recent advancements in IC technology, several challenges remain to be addressed to enhance IC performance. This project attempted to explore the possibility of utilizing compaction measurement values (CMVs) as a function of vibration amplitude and frequency in the control system with the goal of optimizing the compaction process. In addition, it was attempted to identify potential wireless sensing systems and possible integration with IC roller for field applications. The analysis of data from an IC project indicated that linear models can reasonably express the CMVs as a function of vibration amplitude and frequency at different sections of the road. However, the variability of CMVs caused by factors both from the roller and the pavement side makes it difficult to obtain strong correlations between CMVs, vibration amplitude and frequency. In terms of enhancing performance of IC using wireless sensing, considering the complexity of sensing in subsurface, passive wireless sensing appears to be a better choice among existing wireless sensing systems. Proper pressure sensor ruggedization/packaging is critical, particularly for the sensors embedded right below the surface of the pavement. AN - dot:88710 ET - Final Report KW - Intelligent control systems KW - Rollers KW - Compactors KW - Vibration KW - Amplitude KW - Frequency response KW - Sensors KW - Pressure KW - Data analysis KW - Performance KW - Wireless sensors KW - Intelligent compaction KW - IC roller LA - English PB - University of Maine. Transportation Infrastructure Durability Center (TIDC) PY - 2022-08-15 TI - Enhancing Performance of Intelligent Compaction M3 - Tech Report N1 - United States N1 - 69A3551847101 UR - https://rosap.ntl.bts.gov/view/dot/88710 ER -
Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference

Tang, Jiong

;

Zhang, Yang

2022-07-01 | PDF

In this project we explore and develop a new damage detection and identification approach suitable for elastic structure which is built upon piezoelectric active interrogation and intelligent data analytics. Novel sensor designs have been accomplished to effectively extract the impedance information of the underlying structure, the change of which ...

01/27/2026

Title : Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference Creator(s) : Tang, Jiong;Zhang, Yang;Wang, Ting; Corporate Creator(s) : University of Connecticut;University of Maine. Transportation Infrastructure Durability Center (TIDC); Corporate Contributor(s) : United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2022-07-01 URL : https://rosap.ntl.bts.gov/view/dot/88709 Tang, Jiong et al. (2022). Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference. Tang, Jiong and Zhang, Yang and Wang, Ting "Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference" (2022) Tang, Jiong et al. "Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference" , 2022 Export RIS Citation Information. TY - Tech Report AU - Tang, Jiong AU - Zhang, Yang AU - Wang, Ting A2 - University of Connecticut A2 - University of Maine. Transportation Infrastructure Durability Center (TIDC) A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - In this project we explore and develop a new damage detection and identification approach suitable for elastic structure which is built upon piezoelectric active interrogation and intelligent data analytics. Novel sensor designs have been accomplished to effectively extract the impedance information of the underlying structure, the change of which provides the input information for the subsequent damage identification analysis. A series of highly accurate and robust damage identification algorithms built upon multi-objective optimization and Bayesian inference is then formulated to identify the location and severity of damage. During the investigation, new energy harvesting scheme that can enhance the electromechanical coupling of the transducer is synthesized, which can lead to enlarged actuation/sensing range. Comprehensive experimental investigations are conducted to validate the sensor prototype design as well as the algorithmic advancements. Throughout the research, industrial insights are adopted to improve the system performance. This research leads to a new structural fault identification methodology that has potential to be applied to large scale infrastructure, including but not limited no railway tracks. AN - dot:88709 KW - Structural analysis KW - Piezoelectric transducers KW - Sensors KW - Mechanical impedance KW - Measurement KW - Analysis KW - Optimization KW - Energy KW - Mechatronics KW - Performance KW - Statistical inference KW - Data analysis KW - Structural damage identification KW - impedance measurement KW - inverse analysis KW - multi-objective optimization KW - energy harvesting KW - electro-mechanical coupling KW - damage location KW - damage severity LA - English PB - University of Maine. Transportation Infrastructure Durability Center (TIDC) PY - 2022-07-01 TI - Progressive Fault Identification and Prognosis of Railway Tracks Based on Intelligent Inference M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88709 ER -
Distributed Fiber Optic Sensing System for Bridge Monitoring

Wang, Xingwei ;

Yu, Tzuyang

2025-09-30 | PDF

The deterioration of infrastructure presents a major challenge for the economy of any country. Additionally, the risk factor of possible loss of life has made Structural Health Monitoring (SHM) an important approach to evaluate the status of any civil infrastructure. Among different methods, Fiber Optics Sensors have shown great potential to comple ...

01/27/2026

Title : Distributed Fiber Optic Sensing System for Bridge Monitoring Creator(s) : Wang, Xingwei;Yu, Tzuyang; Corporate Creator(s) : University of Massachusetts at Lowell Published Date : 2025-09-30 URL : https://rosap.ntl.bts.gov/view/dot/88708 Wang, Xingwei and Yu, Tzuyang (2025). Distributed Fiber Optic Sensing System for Bridge Monitoring. Wang, Xingwei and Yu, Tzuyang "Distributed Fiber Optic Sensing System for Bridge Monitoring" (2025) Wang, Xingwei and Yu, Tzuyang "Distributed Fiber Optic Sensing System for Bridge Monitoring" , 2025 Export RIS Citation Information. TY - Tech Report AU - Wang, Xingwei AU - Yu, Tzuyang A2 - University of Massachusetts at Lowell AB - The deterioration of infrastructure presents a major challenge for the economy of any country. Additionally, the risk factor of possible loss of life has made Structural Health Monitoring (SHM) an important approach to evaluate the status of any civil infrastructure. Among different methods, Fiber Optics Sensors have shown great potential to complement current monitoring techniques. Its ability to survive harsh environments, immunity to electromagnetic interference, and its capability to provide thousands of data points from a single fiber has made this system very attractive. For this reason, this project aims to continue researching the use of Distributed Fiber Optics Sensors as a mechanism to constantly monitor bridges. Interrogation methods such as Optical Frequency Domain Reflectometry (OFDR), Brillouin Optical Time Domain Amplification (BOTDA), and Brillouin Optical Time Domain Reflectometry (BOTDR) are explored. Also, the development of smart textiles where fiber is embedded in the fabric will continue to be studied. New patterns based on the structure requirement will be developed and tested. Finally, data will be obtained from real bridges located in New Hampshire and Maine. The information collected will be used to validate the proposed approaches by comparing the results with other sensing systems such as strain gauges. AN - dot:88708 KW - Fiber optics KW - Remote sensing KW - Bridge management systems KW - Base lines KW - Data collection KW - Footbridges KW - Infrastructure KW - Structural health monitoring KW - Testing LA - English PB - University of Massachusetts, Lowell PY - 2025-09-30 TI - Distributed Fiber Optic Sensing System for Bridge Monitoring M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88708 ER -
Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges

Yu, Tzuyang

2025-09-30 | PDF

The primary focus of our research is to address the challenge of evaluating aging concrete bridges, both reinforced and prestressed, located in New England. We have developed a remote radar sensor capable of characterizing corroded reinforced concrete structures, as well as a predictive capability to generate artificial cracks and simulate radar im ...

01/27/2026

Title : Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges Creator(s) : Yu, Tzuyang Corporate Creator(s) : University of Massachusetts at Lowell Corporate Contributor(s) : University of Maine. Transportation Infrastructure Durability Center (TIDC) Published Date : 2025-09-30 URL : https://rosap.ntl.bts.gov/view/dot/88707 Yu, Tzuyang (2025). Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges. Yu, Tzuyang "Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges" (2025) Yu, Tzuyang "Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges" , 2025 Export RIS Citation Information. TY - Tech Report AU - Yu, Tzuyang A2 - University of Massachusetts at Lowell A3 - University of Maine. Transportation Infrastructure Durability Center (TIDC) AB - The primary focus of our research is to address the challenge of evaluating aging concrete bridges, both reinforced and prestressed, located in New England. We have developed a remote radar sensor capable of characterizing corroded reinforced concrete structures, as well as a predictive capability to generate artificial cracks and simulate radar images. Two types of EM sensors are used in this research; ground penetrating radar (GPR) and synthetic aperture radar (SAR). AN - dot:88707 ET - 06/05/2018 - 09/30/2025 KW - Electromagnetic devices KW - Detection and identification systems KW - Monitoring KW - Cracking KW - Highway bridges KW - Ground penetrating radar KW - Radar KW - Concrete structures LA - English PB - University of Massachusetts, Lowell PY - 2025-09-30 TI - Electromagnetic Detection and Identification of Concrete Cracking in Highway Bridges M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88707 ER -
Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability

Malla, Ramesh B.

;

de Oliveira, Celso

2022-11-30 | PDF

Long-haul passenger, commuter, and freight railroads are essential to maintaining a thriving economy, especially in New England, with its many urban areas, industries, and significant national defense activities. Amtrak's Northeast Corridor (NEC) is the busiest passenger rail corridor in the United States (US). The US Department of Transportation a ...

01/27/2026

Title : Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability Creator(s) : Malla, Ramesh B.;de Oliveira, Celso;Dhakal, Santosh; Corporate Creator(s) : University of Connecticut. Department of Civil and Environmental Engineering Corporate Contributor(s) : University of Maine. Transportation Infrastructure Durability Center (TIDC);United States. Department of Transportation. University Transportation Centers (UTC) Program;United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology; Published Date : 2022-11-30 Report Number : 69A3551847101 URL : https://rosap.ntl.bts.gov/view/dot/88706 Malla, Ramesh B. et al. (2022). Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability. Malla, Ramesh B. and de Oliveira, Celso and Dhakal, Santosh "Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability" (2022) Malla, Ramesh B. et al. "Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability" , 2022 Export RIS Citation Information. TY - Tech Report AU - Malla, Ramesh B. AU - de Oliveira, Celso AU - Dhakal, Santosh A2 - University of Connecticut. Department of Civil and Environmental Engineering A3 - University of Maine. Transportation Infrastructure Durability Center (TIDC) A3 - United States. Department of Transportation. University Transportation Centers (UTC) Program A3 - United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology AB - Long-haul passenger, commuter, and freight railroads are essential to maintaining a thriving economy, especially in New England, with its many urban areas, industries, and significant national defense activities. Amtrak's Northeast Corridor (NEC) is the busiest passenger rail corridor in the United States (US). The US Department of Transportation and the Federal Railroad Administration have designated NEC as the country's highest priority route for upgrading high-speed rail. In addition, freight service is a vital economic driver; a single train can carry the freight of several hundred trucks, reducing highway gridlock, the cost of maintaining existing highways, and the need to build expensive new ones. Unfortunately, many of the region's rail bridges are old and exhibit unusual characteristics due to wear and tear. This report presents the health monitoring methodologies for structural safety and integrity of old railroad bridges, using material study, field-testing and computational modeling. The report starts with a description of the dynamic structural theory of railroad bridges due to moving vehicles. Then, the tensile tests performed on original materials from the bridge replaced during maintenance are discussed, including the analysis of test results in accordance with ASTM specifications. Subsequently, the time-and frequency-domain analyses of the bridge response data recorded during the field tests on the selected bridges to extract the dynamic structural response characteristics of the bridge structure are described. Finally, detailed descriptions of Finite Element (FE) models of the respective bridges are given, and the results of FE simulations are compared against those obtained from the field data. The outcome is a correlation between the field test data and the predictions of the dynamic theory of bridge spans under moving vehicle loads. Interpretations of the field test observations using theoretical results are provided. The material tensile test results have shown consistency with values recommended by the design codes. Similarly, the results presented here have shown a reasonable agreement between the theoretical values, field test data and computational models. The methodology presented in this report can be applied to better understand and help mitigate dynamic structural problems encountered in typical railroad bridges. AN - dot:88706 ET - Final Report: 10/01/2018 to 9/30/2022 KW - Railroad bridges KW - Monitoring KW - Bridge management systems KW - Laser doppler velocimeters KW - Vibrometers KW - Accelerometers KW - Dynamic stability KW - Velocity KW - Mechanical acceleration KW - Finite element method KW - Field tests KW - Tests KW - Tension tests KW - Haul distance KW - Bridge Monitoring KW - Dynamic Response KW - Displacement KW - Railroad Bride Material Testing LA - English PB - University of Maine. Transportation Infrastructure Durability Center (TIDC) PY - 2022-11-30 SN - 69A3551847101 TI - Condition/Health Monitoring of Railroad Bridges for Structural Safety, Integrity, and Durability M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88706 ER -
Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results

Solaimanian, Mansour ;

Pendola, Ginamarco Renato

2002-05-01 | PDF

Aggregates, through internal friction, must transmit the wheel loads to the underlying layers and also be resistant to abrasion and polishing due to traffic. Aggregates are subject to crushing and abrasive wear during manufacturing, placing, and compacting hot mix asphalt concrete (HMAC), and, therefore, must be hard and tough to resist degradation ...

01/27/2026

Title : Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results Creator(s) : Solaimanian, Mansour;Pendola, Ginamarco Renato;Kennedy, Thomas W.; Corporate Creator(s) : University of Texas at Austin. Center for Transportation Research Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2002-05-01 Report Number : FHWA/TX-04/7-4977-1 URL : https://rosap.ntl.bts.gov/view/dot/88705 Solaimanian, Mansour et al. (2002). Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results. Solaimanian, Mansour and Pendola, Ginamarco Renato and Kennedy, Thomas W. "Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results" (2002) Solaimanian, Mansour et al. "Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results" , 2002 Export RIS Citation Information. TY - Tech Report AU - Solaimanian, Mansour AU - Pendola, Ginamarco Renato AU - Kennedy, Thomas W. A2 - University of Texas at Austin. Center for Transportation Research A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Aggregates, through internal friction, must transmit the wheel loads to the underlying layers and also be resistant to abrasion and polishing due to traffic. Aggregates are subject to crushing and abrasive wear during manufacturing, placing, and compacting hot mix asphalt concrete (HMAC), and, therefore, must be hard and tough to resist degradation and disintegration at different stages. A series of different tests are used to ensure that aggregates carry required characteristics for use in HMAC. Within the last few years, the Texas Department of Transportation (TxDOT) has been using the Hamburg Wheel Tracking Device (HWTD) to evaluate the moisture susceptibility of HMAC. During these tests, it was noticed that softer aggregate underwent severe abrasion under the wheels of the HWTD. Therefore, a research study was sponsored by TxDOT for a period of one year to evaluate the relationship between aggregate properties and the results from the HWTD. Three limestone, four gravel, one sandstone, and three igneous rocks were considered in the study. These eleven aggregates provided a relatively good coverage of different aggregate types used in Texas. A series of tests were performed on the aggregates. The tests included magnesium sulfate soundness, Micro-Deval loss, L.A. abrasion, British Pendulum polish value, and acid insoluble residue. Asphalt-aggregate mixtures were prepared according to specific mix designs received from various districts. The mixtures were compacted with a Superpave gyratory compactor. The prepared specimens were tested with the HWTD. The HWTD tested specimens were evaluated by the British Pendulum equipment to quantify the aggregate polishing caused by HWTD. The final step included performing gradation analysis on the extracted aggregates to evaluate the changes from the original gradation caused by the damage and degradation produced by HWTD. In general, based on the results of the HWTD, limestone aggregates exhibited the highest level of degradation and gravel aggregates demonstrated the toughest resistance to degradation. At the same time, in general, limestone aggregates exhibited better resistance against moisture damage compared to gravel aggregates. AN - dot:88705 KW - Abrasion KW - Aggregates KW - Aggregate gradation KW - Compaction KW - Compactors KW - Gravel KW - Hot mix asphalt KW - Igneous rocks KW - Limestone aggregates KW - Mix design KW - Sandstones KW - Soundness test LA - English PB - Texas. Department of Transportation PY - 2002-05-01 SN - FHWA/TX-04/7-4977-1 TI - Relationship Between Aggregate Properties and Hamburg Wheel Tracking Results M3 - Tech Report N1 - United States N1 - 7-4977 UR - https://rosap.ntl.bts.gov/view/dot/88705 ER -
Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems

Brydia, Robert E. ;

Brackin, Byron E.

2005-10-01 | PDF

Texas Department of Transportation (TxDOT) engineers are responsible for the design, evaluation, and implementation of Intelligent Transportation System (ITS) solutions across the entire state. These installations occur with vast differences in requirements, expectations, and constraints. Many deployments require some type of communication system t ...

01/27/2026

Title : Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems Creator(s) : Brydia, Robert E.;Brackin, Byron E.;Johnson, Jeremy D;Thomas, Gary B.;Balke, Kevin N.; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2005-10-01 Report Number : FHWA/TX-06/0-4969-1 URL : https://rosap.ntl.bts.gov/view/dot/88704 Brydia, Robert E. et al. (2005). Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems. Brydia, Robert E. et al. "Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems" (2005) Brydia, Robert E. et al. "Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems" , 2005 Export RIS Citation Information. TY - Tech Report AU - Brydia, Robert E. AU - Brackin, Byron E. AU - Johnson, Jeremy D AU - Thomas, Gary B. AU - Balke, Kevin N. A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - Texas Department of Transportation (TxDOT) engineers are responsible for the design, evaluation, and implementation of Intelligent Transportation System (ITS) solutions across the entire state. These installations occur with vast differences in requirements, expectations, and constraints. Many deployments require some type of communication system to complete the installation. This report details the development of a reference guidebook and training workshop for TxDOT engineers. The purpose of these materials is to: (1) establish a fundamental level of understanding of wireline communication concepts and technologies, (2) convey and explain a comprehensive process for assessing communication needs for ITS deployments, and (3) create a set of workshop materials for future training program opportunities. AN - dot:88704 KW - Communications KW - Intelligent transportation systems KW - Scheduling KW - Training KW - Workshops KW - Guidelines LA - English PB - Texas. Department of Transportation PY - 2005-10-01 SN - FHWA/TX-06/0-4969-1 TI - Development of a Wireline Communications Design Guidebook for Intelligent Transportation Systems M3 - Tech Report N1 - United States N1 - 0-4969 UR - https://rosap.ntl.bts.gov/view/dot/88704 ER -
Wireline ITS Communications Training: Year 1 Report of Activities

Brydia, Robert E.

2006-11-01 | PDF

This report summarizes the Year 1 activities under implementation project 5-4969-01, Wireline Intelligent Transportation Systems (ITS) Communications Training. The overall objective of the project is to modify the workshop offerings developed in a previous project to an 8-hour format and teach the workshop materials at 10 locations across the state ...

01/27/2026

Title : Wireline ITS Communications Training: Year 1 Report of Activities Creator(s) : Brydia, Robert E. Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2006-11-01 Report Number : FHWA/TX-07/5-4969-01-1, Report 5-4969-01-1 URL : https://rosap.ntl.bts.gov/view/dot/88703 Brydia, Robert E. (2006). Wireline ITS Communications Training: Year 1 Report of Activities. Brydia, Robert E. "Wireline ITS Communications Training: Year 1 Report of Activities" (2006) Brydia, Robert E. "Wireline ITS Communications Training: Year 1 Report of Activities" , 2006 Export RIS Citation Information. TY - Tech Report AU - Brydia, Robert E. A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This report summarizes the Year 1 activities under implementation project 5-4969-01, Wireline Intelligent Transportation Systems (ITS) Communications Training. The overall objective of the project is to modify the workshop offerings developed in a previous project to an 8-hour format and teach the workshop materials at 10 locations across the state, including a pilot workshop. Year 1 activities included workshop modification, pilot course offering, and scheduling of workshops. AN - dot:88703 KW - Communications KW - Intelligent transportation systems KW - Scheduling KW - Training KW - Workshops LA - English PB - Texas. Department of Transportation PY - 2006-11-01 SN - FHWA/TX-07/5-4969-01-1, Report 5-4969-01-1 TI - Wireline ITS Communications Training: Year 1 Report of Activities M3 - Tech Report N1 - United States N1 - 5-4969-01 UR - https://rosap.ntl.bts.gov/view/dot/88703 ER -
Wireline ITS Communications Training: Year 2 Report of Activities

Brydia, Robert E.

2007-10-01 | PDF

This report summarizes the Year 2 activities under Implementation Project 5-4969-01, “Wireline ITS Communications Training.” The overall objectives of the project were to modify the workshop offerings developed in a previous project to an eight-hour format and teach the workshop materials at 10 locations across the state, including a pilot workshop ...

01/27/2026

Title : Wireline ITS Communications Training: Year 2 Report of Activities Creator(s) : Brydia, Robert E. Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2007-10-01 Report Number : FHWA/TX-08/5-4969-01-2, Report 5-4969-01-2 URL : https://rosap.ntl.bts.gov/view/dot/88702 Brydia, Robert E. (2007). Wireline ITS Communications Training: Year 2 Report of Activities. Brydia, Robert E. "Wireline ITS Communications Training: Year 2 Report of Activities" (2007) Brydia, Robert E. "Wireline ITS Communications Training: Year 2 Report of Activities" , 2007 Export RIS Citation Information. TY - Tech Report AU - Brydia, Robert E. A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This report summarizes the Year 2 activities under Implementation Project 5-4969-01, “Wireline ITS Communications Training.” The overall objectives of the project were to modify the workshop offerings developed in a previous project to an eight-hour format and teach the workshop materials at 10 locations across the state, including a pilot workshop. Year 2 activities included teaching the workshops and preparing the final deliverable for the Texas Department of Transportation (TxDOT). AN - dot:88702 KW - Communications KW - Intelligent transportation systems KW - Scheduling KW - Training KW - Workshops LA - English PB - Texas. Department of Transportation PY - 2007-10-01 SN - FHWA/TX-08/5-4969-01-2, Report 5-4969-01-2 TI - Wireline ITS Communications Training: Year 2 Report of Activities M3 - Tech Report N1 - United States N1 - 5-4969-01 UR - https://rosap.ntl.bts.gov/view/dot/88702 ER -
An Evaluation of Dallas Area HOV Lanes, Year 2001

Skowronek, Douglas A. ;

Ranft, Stephen E.

2002-11-01 | PDF

Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have be ...

01/27/2026

Title : An Evaluation of Dallas Area HOV Lanes, Year 2001 Creator(s) : Skowronek, Douglas A.;Ranft, Stephen E.;Cothron, A. Scott; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office Published Date : 2002-11-01 Report Number : TX-02/4961-4 URL : https://rosap.ntl.bts.gov/view/dot/88701 Skowronek, Douglas A. et al. (2002). An Evaluation of Dallas Area HOV Lanes, Year 2001. Skowronek, Douglas A. and Ranft, Stephen E. and Cothron, A. Scott "An Evaluation of Dallas Area HOV Lanes, Year 2001" (2002) Skowronek, Douglas A. et al. "An Evaluation of Dallas Area HOV Lanes, Year 2001" , 2002 Export RIS Citation Information. TY - Tech Report AU - Skowronek, Douglas A. AU - Ranft, Stephen E. AU - Cothron, A. Scott A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office AB - Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have been shown to be very successful in Texas, they have been met with skepticism in several areas across the country. Public criticism of HOV lanes in two corridors in New Jersey (IH-287 and IH-80) led to their closure. In the wake of the actions of New Jersey, legislation has been introduced in California to limit the implementation of new HOV lanes and to potentially remove existing HOV lanes. Inappropriate data, such as vehicle volumes, are used as a basis for removing the facilities. The states of Colorado, Virginia, and Georgia have also proposed legislation to either eliminate HOV lanes or convert them to high-occupancy toll (HOT) lanes. While some of the claims against HOV lanes may be justified, a need exists to evaluate new HOV lanes implemented in the Dallas area as well as to continue an evaluation of existing HOV lanes. While developers plan an extensive system of permanent HOV lanes for the Dallas-Fort Worth urbanized area, the Texas Department of Transportation (TxDOT) and Dallas Area Rapid Transit (DART) have pursued and continue to pursue short-term or interim HOV lane projects that would enhance public transportation and overall mobility. There are currently 35.4 miles of interim HOV lanes operational in the Dallas area, including a barrier-separated contraflow lane on East R.L. Thornton Freeway (IH-30) and buffer-separated concurrent flow HOV lanes on Stemmons Freeway (IH-35E North) and Lyndon B. Johnson Freeway (IH-635). The objective of this research is to investigate the operational effectiveness of the Dallas area HOV lanes. Issues such as person movement, carpool formation, travel time savings, violation rates, safety, and project cost effectiveness are addressed. By understanding the operational performance and issues of both concurrent flow (buffer-separated) HOV lanes and contraflow (barrier-separated) HOV lanes, recommendations can be made on suggested HOV lane policies, including the type of permanent HOV lanes to be implemented in the Dallas area. AN - dot:88701 KW - Carpools KW - Concurrent flow KW - Contraflow lanes KW - Cost effectiveness KW - High occupancy vehicle lanes KW - Mobility KW - Person capacity KW - Traffic safety KW - Traffic violations KW - Transportation policy KW - Travel time LA - English PB - Texas. Department of Transportation PY - 2002-11-01 SN - TX-02/4961-4 TI - An Evaluation of Dallas Area HOV Lanes, Year 2001 M3 - Tech Report N1 - United States N1 - 7-4961 UR - https://rosap.ntl.bts.gov/view/dot/88701 ER -
An Evaluation of Dallas Area HOV Lanes, Year 2000

Skowronek, Douglas A. ;

Ranft, Stephen E.

2002-03-01 | PDF

This report is a summary of the first year of a three-year study that will permit a comprehensive assessment of the high-occupancy vehicle (HOV) lanes currently operating in the Dallas area. Since various types of HOV lanes are being phased into operation in the Dallas region, several design and operational issues have yet to be resolved, and area ...

01/27/2026

Title : An Evaluation of Dallas Area HOV Lanes, Year 2000 Creator(s) : Skowronek, Douglas A.;Ranft, Stephen E.;Cothron, A. Scott; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office Published Date : 2002-03-01 Report Number : TX-00/4961-2 URL : https://rosap.ntl.bts.gov/view/dot/88700 Skowronek, Douglas A. et al. (2002). An Evaluation of Dallas Area HOV Lanes, Year 2000. Skowronek, Douglas A. and Ranft, Stephen E. and Cothron, A. Scott "An Evaluation of Dallas Area HOV Lanes, Year 2000" (2002) Skowronek, Douglas A. et al. "An Evaluation of Dallas Area HOV Lanes, Year 2000" , 2002 Export RIS Citation Information. TY - Tech Report AU - Skowronek, Douglas A. AU - Ranft, Stephen E. AU - Cothron, A. Scott A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office AB - This report is a summary of the first year of a three-year study that will permit a comprehensive assessment of the high-occupancy vehicle (HOV) lanes currently operating in the Dallas area. Since various types of HOV lanes are being phased into operation in the Dallas region, several design and operational issues have yet to be resolved, and area officials are inquiring about the Texas Department of Transportation's (TxDOT's) policy on many of these issues. HOV lanes have shown to be very successful in Texas. However, HOV lanes have been met with skepticism in several areas across the country. HOV lanes in two corridors in New Jersey (IH-287 and IH-80) were recently closed as a result of public criticism. In the wake of the actions of New Jersey, legislation has been introduced in California to limit the implementation of new HOV lanes and to potentially remove existing HOV lanes. Inappropriate data, such as vehicle volumes, are used as a basis for removing the facilities. While some of the claims against HOV lanes may be justified, a need exists to evaluate new HOV lanes implemented in the Dallas area as well as to continue an evaluation of existing HOV lanes and report accurate and detailed operational data. While an extensive system of permanent HOV lanes is planned for the Dallas-Fort Worth urbanized area, the TxDOT and Dallas Area Rapid Transit (DART) have pursued and continue to pursue short-term or interim HOV lane projects that would enhance public transportation and overall mobility. There are currently 35.4 miles of interim HOV lanes operational in the Dallas area, including a barrier-separated contraflow lane on East R.L. Thornton Freeway (IH-30) and buffer-separated concurrent flow HOV lanes on Stemmons Freeway (IH-35E North) and Lyndon B. Johnson Freeway (IH-635). The objective of this project is to investigate the operational effectiveness of the Dallas area HOV lanes. Issues such as person movement, carpool formation, travel time savings, violation rates, safety, and project cost effectiveness are addressed. By understanding the operational performance and issues of both concurrent flow (buffer-separated) HOV lanes and contraflow (barrier-separated) HOV lanes, recommendations can be made on suggested HOV lane policies, including the type of permanent HOV lanes to be implemented in the Dallas area. AN - dot:88700 KW - Carpools KW - Concurrent flow KW - Contraflow lanes KW - Cost effectiveness KW - High occupancy vehicle lanes KW - Mobility KW - Person capacity KW - Traffic safety KW - Traffic violations KW - Transportation policy KW - Travel time LA - English PB - Texas. Department of Transportation PY - 2002-03-01 SN - TX-00/4961-2 TI - An Evaluation of Dallas Area HOV Lanes, Year 2000 M3 - Tech Report N1 - United States N1 - 7-4961 UR - https://rosap.ntl.bts.gov/view/dot/88700 ER -
An Evaluation of Dallas Area HOV Lanes, Year 2002

Skowronek, Douglas A. ;

Ranft, Stephen E.

2002-08-01 | PDF

Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have be ...

01/27/2026

Title : An Evaluation of Dallas Area HOV Lanes, Year 2002 Creator(s) : Skowronek, Douglas A.;Ranft, Stephen E.;Cothron, A. Scott; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office Published Date : 2002-08-01 Report Number : TX-02/4961-6 URL : https://rosap.ntl.bts.gov/view/dot/88699 Skowronek, Douglas A. et al. (2002). An Evaluation of Dallas Area HOV Lanes, Year 2002. Skowronek, Douglas A. and Ranft, Stephen E. and Cothron, A. Scott "An Evaluation of Dallas Area HOV Lanes, Year 2002" (2002) Skowronek, Douglas A. et al. "An Evaluation of Dallas Area HOV Lanes, Year 2002" , 2002 Export RIS Citation Information. TY - Tech Report AU - Skowronek, Douglas A. AU - Ranft, Stephen E. AU - Cothron, A. Scott A2 - Texas A&M University System. Texas Transportation Institute A3 - Texas Department of Transportation. Research and Technology Implementation Office AB - Limited capital investment for major transportation improvements and growth in metropolitan areas require the most efficient use of the existing transportation system. Provisions of the Clean Air Act Amendments and TEA21 further intensify these concerns. One means to improve mobility is high-occupancy vehicle (HOV) lanes. Although HOV lanes have been shown to be very successful in Texas, they have been met with skepticism in several areas across the country. Public criticism of HOV lanes in two corridors in New Jersey (IH-287 and IH-80) led to their closure. In the wake of the actions of New Jersey, legislation has been introduced in California to limit the implementation of new HOV lanes and to potentially remove existing HOV lanes. Inappropriate data, such as vehicle volumes, are used as a basis for removing the facilities. The states of Colorado, Virginia, and Georgia have also proposed legislation to either eliminate HOV lanes or convert them to high-occupancy toll (HOT) lanes. While some of the claims against HOV lanes may be justified, a need exists to evaluate new HOV lanes implemented in the Dallas area as well as to continue an evaluation of existing HOV lanes. While developers plan an extensive system of permanent HOV lanes for the Dallas-Fort Worth urbanized area, the Texas Department of Transportation (TxDOT) and Dallas Area Rapid Transit (DART) have pursued and continue to pursue short-term or interim HOV lane projects that would enhance public transportation and overall mobility. There are currently 48.2 miles of interim HOV lanes operational in the Dallas area, including a barrier-separated contraflow HOV lane on East R.L. Thornton Freeway (IH-30), buffer-separated concurrent flow HOV lanes on Stemmons Freeway (IH-35E North) and Lyndon B. Johnson Freeway (IH-635), and a barrier-separated reversible flow HOV lane on South R.L. Thornton (IH-35E South) connected to a buffer-separated concurrent flow HOV lane on Marvin D. Love (US-67). The objective of this research is to investigate the operational effectiveness of the Dallas area HOV lanes. Issues such as person movement, carpool formation, travel time savings, violation rates, safety, and project cost effectiveness are addressed. By understanding the operational performance and issues of both buffer-separated (concurrent flow) HOV lanes and barrier-separated (movable barrier contraflow or fixed barrier reversible flow) HOV lanes, recommendations can be made on suggested HOV lane implementation guidelines for the Dallas area. AN - dot:88699 KW - Carpools KW - Concurrent flow KW - Contraflow lanes KW - Cost effectiveness KW - High occupancy vehicle lanes KW - Mobility KW - Person capacity KW - Traffic safety KW - Traffic violations KW - Transportation policy KW - Travel time LA - English PB - Texas. Department of Transportation PY - 2002-08-01 SN - TX-02/4961-6 TI - An Evaluation of Dallas Area HOV Lanes, Year 2002 M3 - Tech Report N1 - United States N1 - 7-4961 UR - https://rosap.ntl.bts.gov/view/dot/88699 ER -
Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications

Lim, Seungwook ;

Kestner, Dirk

2003-01-01 | PDF

This project focused on the evaluation of the feasibility of using crushed portland cement concrete (CPCC) materials in Texas Department of Transportation applications. Special interest was given to the use of CPCC fines passing the No. 4 sieve. The research approach for exploring potential applications was divided into two ways as follows: paving ...

01/27/2026

Title : Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications Creator(s) : Lim, Seungwook;Kestner, Dirk;Zollinger, Dan G.;Fowler, David W.; Corporate Creator(s) : Texas A&M University System. Texas Transportation Institute;University of Texas at Austin. Center for Transportation Research; Corporate Contributor(s) : Texas Department of Transportation. Research and Technology Implementation Office;United States. Department of Transportation. Federal Highway Administration; Published Date : 2003-01-01 Report Number : TX-04/7-4954-1 URL : https://rosap.ntl.bts.gov/view/dot/88698 Lim, Seungwook et al. (2003). Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications. Lim, Seungwook et al. "Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications" (2003) Lim, Seungwook et al. "Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications" , 2003 Export RIS Citation Information. TY - Tech Report AU - Lim, Seungwook AU - Kestner, Dirk AU - Zollinger, Dan G. AU - Fowler, David W. A2 - Texas A&M University System. Texas Transportation Institute A2 - University of Texas at Austin. Center for Transportation Research A3 - Texas Department of Transportation. Research and Technology Implementation Office A3 - United States. Department of Transportation. Federal Highway Administration AB - This project focused on the evaluation of the feasibility of using crushed portland cement concrete (CPCC) materials in Texas Department of Transportation applications. Special interest was given to the use of CPCC fines passing the No. 4 sieve. The research approach for exploring potential applications was divided into two ways as follows: paving applications: flexible base, cement treated base, and hot mix asphalt (HMA) bond breaker; and non-paving applications: portland cement concrete, flowable fill, backfill, and embankment. Much of the research effort was devoted to a laboratory test program for material characterization. The test program identified aggregate properties, mix design properties, basic mechanistic properties, workability, and moisture susceptibility of the applied mixtures containing crushed concrete materials. Although the use of crushed concrete materials generally resulted in increased water demand and decreased workability, test results indicated that crushed concrete materials are highly feasible to use in the selected applications. However, CPCC fines were determined not to be suitable for the reproduction of portland cement concrete because the loss of workability was so severe in this application. Based on the results of the test program, recommendations and revised specifications, which allow for the use of CPCC fines, are provided for the selected applications: flexible base, cement treated base, HMA bond breaker, flowable fill, backfill, and roadway embankment. AN - dot:88698 KW - Embankments KW - Flowable fill KW - Hot mix asphalt KW - Laboratory tests KW - Mix design KW - Pavement surface course KW - Portland cement concrete KW - Properties of materials KW - Trench backfill LA - English PB - Texas. Department of Transportation PY - 2003-01-01 SN - TX-04/7-4954-1 TI - Characterization of Crushed Concrete Materials for Paving and Non-Paving Applications M3 - Tech Report N1 - United States N1 - 7-4954 UR - https://rosap.ntl.bts.gov/view/dot/88698 ER -
EMST Panel 1 Text File Strain Survey [supporting data]

Tian, Yongzhe ;

Stanley, Dave

2026-01-01 | ZIP

In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMS ...

01/27/2026

Supporting Files

Title : EMST Panel 1 Text File Strain Survey [supporting data] Creator(s) : Tian, Yongzhe;Stanley, Dave;Bakuckas, John Jr.;Kulak, Mike;Fulton, Erin; Corporate Creator(s) : United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Transport Airplane Directorate Published Date : 2026-01-01 DOI : https://doi.org/10.21949/mfan-th68 Tian, Yongzhe et al. (2026). EMST Panel 1 Text File Strain Survey [supporting data]. https://doi.org/10.21949/mfan-th68 Tian, Yongzhe et al. "EMST Panel 1 Text File Strain Survey [supporting data]" (2026), https://doi.org/10.21949/mfan-th68 Tian, Yongzhe et al. "EMST Panel 1 Text File Strain Survey [supporting data]" , 2026, https://doi.org/10.21949/mfan-th68 Export RIS Citation Information. TY - Dataset AU - Tian, Yongzhe AU - Stanley, Dave AU - Bakuckas, John Jr. AU - Kulak, Mike AU - Fulton, Erin A2 - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center A3 - United States. Department of Transportation. Federal Aviation Administration. Transport Airplane Directorate AB - In partnership with Arconic and Embraer, the Federal Aviation Administration (FAA) is assessing emerging metallic structures technologies (EMST) using the FAA’s Full-Scale Aircraft Structural Test Evaluation and Research (FASTER) facility. In this collaborative effort, full-scale fuselage panel test data will be obtained to assess the effect of EMST fuselage concepts on damage tolerance performance as compared to the current baseline aluminum fuselage structures located on the crown of a typical single-aisle aircraft forward of the wing. Several technologies will be considered in the scope of the project, including advanced aluminum–lithium alloys, selective reinforcement using fiber metal laminates, and advanced joining processes, such as friction stir welding. Data from this study will be used to verify improved weight and structural safety performance of EMST and to assess the adequacy of existing airworthiness standards and guidance needed for the implementation of arising technologies and their impact on future designs. Results from the first baseline panel test are summarized in this technical note and will be compared to future tests on advanced panels containing varying EMST to assess the damage-tolerance performance. AN - dot:88697 DO - https://doi.org/10.21949/mfan-th68 KW - Structural tests KW - Aircraft structural components KW - Engineering tolerances KW - Residual strength KW - Finite element method KW - Fuselages KW - Datasets LA - English PB - United States. Department of Transportation. Federal Aviation Administration PY - 2026-01-01 TI - EMST Panel 1 Text File Strain Survey [supporting data] M3 - Dataset N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/88697 ER -

Previous Page Previous

81 - 100 / 513

Next Page Next