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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 6821 - 6840 of 36104 results
  • Evaluation of Reflective Cracking Mitigation Treatments Using the Composite Specimen Interface Crack CSIC Test
    Evaluation of Reflective Cracking Mitigation Treatments Using the Composite Specimen Interface Crack (CSIC) Test
    Roque, Reynaldo ;
    Cocconcelli, Cristian
    2018-06-01 | PDF
    Reflective cracking is frequently reported as the most common distress affecting resurfaced pavements. The Florida Department of Transportation (FDOT) has traditionally used an asphalt rubber membrane interlayer (ARMI) approach to mitigate reflective cracking. However, recent field evidence has raised doubts about the effectiveness of the ARMI when ...
    Supporting Files
  • Local Access Management Regulations Technical Brief
    Local Access Management Regulations [Technical Brief]
    Rutgers University  ...
    2018-06-01 | PDF
    This research identifies and recommends strategies, tools, and guidelines to facilitate access management on local (i.e., county and municipal) roads intersecting and/or impacting state highways in New Jersey.
  • Determining Bond Strength of Microsurfacing Mixes Phase 1
    Determining Bond Strength of Micro-surfacing Mixes [Phase 1]
    Nazzal, Munir D. ;
    Abbas, Ala
    2018-06-01 | PDF
    This report summarizes Phase 1 research work that was completed to document the current state-of-the-practice for using tack coat with micro-surfacing projects by state and provincial transportation agencies, summarize studies on the evaluation of bond strength between micro-surfacing mixes and existing pavement surface, and identify available test ...
  • Wind Effects on Mast Arms
    Wind Effects on Mast Arms
    Bridge, Jennifer ;
    Consolazio, Gary R.
    2018-06-01 | PDF
    Mast arm structures with cantilevered arms are known to be wind-sensitive structures. Previously, research on mast arm structures has primarily focused on vibrations and fatigue analysis under dynamic wind loading conditions (Chen et al., 2001; Zuo and Letchford, 2010; Pulipakaa et al. 1998; Letchford and Cruzado, 2008). The focus of this study is ...
    Supporting Files
  • Experimental Investigation of High Performing Protective Shell Used for Retrofitting Bridge Elements
    Experimental Investigation of High Performing Protective Shell Used for Retrofitting Bridge Elements
    Valikhani, Alireza ;
    Azizinamini, Atorod
    2018-06-01 | PDF
    The bridge structure elements are exposed to severe environmental conditions which causes reduction in service life and durability that may require repair and retrofit. In this project, thin shells of Ultra High Performance Concrete (UHPC) are used to retrofit damaged portions of bridge elements. UHPC shells are beneficial for protection against de ...
  • Extending Application of Simple for Dead and Continuous for Live Load Steel Bridge System to ABC Applications in Seismic Regions Phase II Experimental
    Extending Application of Simple for Dead and Continuous for Live Load Steel Bridge System to ABC Applications in Seismic Regions- Phase II- Experimental
    Sadeghnejad, Amir
    2018-06-01 | PDF
    Simple for Dead load and Continuous for Live load (SDCL) steel bridge system has proven to be economical for non-seismic application. Although the system has been used in different methods of construction, this paper concentrates on Accelerated Bridge Construction (ABC) application. The application of the SDCL steel bridge system in high seismic ar ...
  • Women in Railroad Operational Roles
    Women in Railroad Operational Roles
    Mundy, Ray A. ;
    Rust, Daniel L.
    2018-06-01 | PDF
    A 2014 study from the Conference Board stated that industries with higher concentrations of older workers, specifically the rail and trucking industries, will “be at the highest risk for labor shortages” in the immediate future because so many employees are eligible for retirement. In light of current and looming labor shortages, the number of fema ...
  • Bridge Service Life Design
    Bridge Service Life Design
    Bales, Elizabeth Rose ;
    Chitrapu, Venkatasaikrishna
    2018-06-01 | PDF
    High costs and traffic disruption associated with the deterioration of reinforced concrete bridge decks because of corrosion have sparked renewed interest in service life design. Reinforced concrete bridge decks are exposed to chlorides from deicing salts; when the chlorides reach the steel reinforcement, they initiate corrosion. This study support ...
  • Every Day Counts An Innovation Partnership With States EDC4 Progress Report 3 JanuaryJune 2018
    Every Day Counts: An Innovation Partnership With States - EDC-4 Progress Report #3, January–June 2018
    United States. Federal Highway Administration
    2018-06-01 | PDF
    Every Day Counts (EDC) is a Federal Highway Administration program to advance a culture of innovation in the transportation community in partnership with public and private stakeholders. Through this State-based effort, FHWA coordinates rapid deployment of proven strategies and technologies to shorten the project delivery process, enhance roadway s ...
  • Appendices to the Report Motor Carrier Hazardous Materials Safety Permits Study
    Appendices to the Report: Motor Carrier Hazardous Materials Safety Permits Study
    Spiegel, Walter ;
    Bergoffen, Gene
    2018-06-01 | PDF
    These are the appendices to the report titled “Motor Carrier Hazardous Materials Safety Permits Study,” available at: https://doi.org/10.21949/1503445. Minor changes have been made to this document since its initial writing and compilation. Note: “Compliance review” and its acronym “CR” have been changed to read “comprehensive investigation” and “C ...
  • Network Analysis of the Multimodal Freight Transportation System in New York City
    Network Analysis of the Multimodal Freight Transportation System in New York City
    Wang, Qian ;
    Tang, Shuai
    2018-06-01 | PDF
    The research is aimed at examining the multimodal freight transportation network in the New York metropolitan region to identify critical links, nodes and terminals that affect last-mile deliveries. Two types of analysis were conducted to gain a big picture of the region’s freight transportation network. First, three categories of network measures ...
  • UltraThin Bonded Wearing Course UTBWC Snow Ice and Wind Effects Transportation Research Synthesis
    Ultra-Thin Bonded Wearing Course (UTBWC) Snow, Ice, and Wind Effects: Transportation Research Synthesis
    Wegman, Daniel E. ;
    Sabouri, Mohammadreza
    2018-06-01 | PDF
    Several MnDOT UTBWC projects and their pavement performance attributes have been studied during the 2000s. However, winter maintenance practices and activities have not been identified as factors on these projects. Some MnDOT District Maintenance forces have recently observed that in-service UTBWC surfaces can increase time demands and/or the amoun ...
  • FHWA Local Highway Finance Reporting
    FHWA Local Highway Finance Reporting
    Carnegie, Jon A.
    2018-06-01 | PDF
    The Federal Highway Administration requires State departments of transportation (DOTs) to compile, analyze, and report State motor-fuel, motor-vehicle, driver license, motor-carrier data, and highway finance data associated with expenditures by State and local governments. The purpose of this study was to develop a new methodology and procedures fo ...
  • LTRC Annual Research Program Fiscal Year July 1 2018 June 30 2019
    LTRC Annual Research Program: Fiscal Year July 1, 2018 - June 30, 2019
    Louisiana. Dept. of Transportation and Development  ...
    2018-06-01 | PDF
    FHWA Part II SPR Research Program FAP Number SPR-0010(34); & FHWA Funded Research Program & FHWA LTAP Funded Program; & FHWA STP Funded Program; & Federal; & Self-Generated Funded Research Program; & Other DOTD Funded Projects.
  • Using CHAID Decision Trees to Evaluate Severities of Missouri Truck Crashes
    Using CHAID Decision Trees to Evaluate Severities of Missouri Truck Crashes
    Bernard Bracy, Jill M
    2018-06-01 | PDF
    Large truck transport is vital for freight shipping in the United States; yet, it can prove to be a dangerous mode of transportation. From 2002 to 2012, 91,145 crashes involving large trucks occurred in Missouri, resulting in 1,156 fatalities and 18,457 injuries. Many factors contribute to large-truck crash severity, and it is theorized that these ...
  • Investigating the Necessity and Prioritizing Pavement Markings on LowVolume Roads
    Investigating the Necessity and Prioritizing Pavement Markings on Low-Volume Roads
    Smadi, Omar ;
    Veneziano, David
    2018-06-01 | PDF
    The installation and maintenance of pavement markings represents a significant financial investment for local agencies. Local agencies need a mechanism to better understand the value, cost, and need for markings along their roadways to make the best use of available budgets. This project developed a prioritization approach and spreadsheet tool (lin ...
    Supporting Files
  • MechanisticEmpirical ME Design Implementation Monitoring for Flexible Pavements 2018 PROJECT SUMMARY
    Mechanistic-Empirical (M-E) Design Implementation & Monitoring for Flexible Pavements: 2018 PROJECT SUMMARY
    Thompson, Marshall R. ;
    Lippert, David L.
    2018-06-01 | PDF
    This document is a summary of the tasks performed for Project ICT-R27-149-1. Mechanistic-empirical (M-E)–based flexible pavement design concepts and procedures were previously developed in Illinois Cooperative Highway Research Program projects IHR-510, IHR-524, ICT- R28, and ICT-R27-060; and have been implemented by the Illinois Department of Trans ...
  • Investigation of Gender Differences in LargeTruck Crash Injury Severity in Missouri
    Investigation of Gender Differences in Large-Truck Crash Injury Severity in Missouri
    Bernard Bracy, Jill M ;
    Mondy, Christopher
    2018-06-01 | PDF
    Large-truck transport is vital for freight shipping in the United States, but it is also a dangerous mode of transportation. From 2002 to 2012, 91,145 crashes involving large trucks occurred in Missouri, resulting in 1,156 fatalities and 18,457 injuries. Many factors contribute to large-truck crash severity, and the authors theorize that these fact ...
  • Safe from Crime at LocationSpecific Transit Facilities
    Safe from Crime at Location-Specific Transit Facilities
    Vernez Moudon, Anne ;
    Bassok, Alon
    2018-06-01 | PDF
    Transit agencies identify two types of exposure to crime: the safety of riders and security. Transit operators have long monitored crime and are cognizant of high incident locations. However, they lack data-driven tools to readily match crime events spatially with the locations of individual transit facilities, and temporally with transit service p ...
  • Quality Assurance Procedures for Chip Seal Operations Using Macrotexture Metrics
    Quality Assurance Procedures for Chip Seal Operations Using Macrotexture Metrics
    Zhao, Guangyuan ;
    Li, Shuo
    2018-06-01 | PDF
    It is anticipated that in FYs 2017-21, the Indiana Department of Transportation (INDOT) will perform 1500 lane miles of chip seal work each year. To ensure successful chip seals, INDOT has implemented visual inspection quality assurance (QA) procedures. However, concerns, such as reliability and validity of visual inspection, time and labor, and sa ...
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