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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 4201 - 4220 of 36011 results
  • Developing and Testing an Advanced Hybrid Electric Vehicles EcoCooperative Adaptive Cruise Control System at Multiple Signalized Intersections
    Developing and Testing an Advanced Hybrid Electric Vehicles Eco-Cooperative Adaptive Cruise Control System at Multiple Signalized Intersections
    Chen, Hao ;
    Rakha, Hesham A.
    2020-10-01 | PDF
    This research develops an advanced Eco-Cooperative Adaptive Cruise Control System (Eco-CACC) for hybrid electric vehicles (HEVs) to pass signalized intersections with energy-optimized speed profiles, with the consideration of impacts by multiple signalized intersections. The research extends the Eco-CACC at signalized intersections (Eco-CACC-I) sys ...
  • Detection Technology Testbed on I 475 Technology Feasibility Study
    Detection Technology Testbed on I 475: Technology Feasibility Study
    Guin, Angshuman ;
    Hunter, Michael
    2020-10-01 | PDF
    This project evaluates the feasibility of use and potential benefits of a video-based automatic incident detection (AID) technology relative to existing detection via the Georgia 511 (NaviGAtor) incident reports and transportation management center operators’ manual observations. This study proposes a clustering machine learning framework for devel ...
  • DataDriven Safety Analysis A User Guide
    Data-Driven Safety Analysis: A User Guide
    Wunderlich, Robert ;
    Dixon, Karen
    2020-10-01 | PDF
    The purpose of this guide is to demonstrate how to use data-driven safety analyses to improve safety on Texas Department of Transportation (TxDOT) roadways. Sections include: (1) Describing TxDOT district safety issues, including using data and graphing to analyze crash trends; (2) Screening the network to identify locations with potential for safe ...
  • Evaluate Potential Impacts Benefits Impediments and Solutions of Automated Trucks and Truck Platooning on Texas Highway Infrastructure Technical Report
    Evaluate Potential Impacts, Benefits, Impediments, and Solutions of Automated Trucks and Truck Platooning on Texas Highway Infrastructure: Technical Report
    Birgisson, Bjorn ;
    Morgan, Curtis A.
    2020-10-01 | PDF
    This report presents a study that conducted an assessment of the potential impacts, benefits, and impediments of the introduction of automated trucks and truck platooning on Texas highway infrastructure. The assessment included, but was not limited to, identification or review of the following: (a) any needed infrastructure hardening decisions and ...
  • Engineered Cementitious Composites ECC for Applications in Texas
    Engineered Cementitious Composites (ECC) for Applications in Texas
    Park, Philip ;
    Jones, Robert
    2020-10-01 | PDF
    The objective of this project was to identify the applications of engineered cementitious composites (ECC) that are suitable for the Texas transportation system. To achieve this goal, the following three activities were conducted: (1) literature review and data analysis, (2) survey on ECC state-of-the-practice, and (3) cost-benefit analysis through ...
  • MASH Test 311 Evaluation of TxDOT WBeam Guardrail With 7Inch Diameter Round Wood Posts in Concrete Mow Strip
    MASH Test 3-11 Evaluation of TxDOT W-Beam Guardrail With 7½-Inch Diameter Round Wood Posts in Concrete Mow Strip
    Moran, Sana M ;
    Bligh, Roger P.
    2020-10-01 | PDF
    The purpose of the testing reported herein was to assess the performance of the Texas Department of Transportation (TxDOT) W-beam guardrail with 7½-inch diameter round wood posts in concrete mow strip according to the safety-performance evaluation guidelines included in the American Association of Safety Highway and Transportation Officials Manual ...
  • Making Every Day Count Applying DataDriven Safety Analyses in a TxDOT District
    Making Every Day Count: Applying Data-Driven Safety Analyses in a TxDOT District
    Wunderlich, Robert ;
    Dixon, Karen
    2020-10-01 | PDF
    Using a data-driven approach to analyze safety issues and projects will help Texas Department of Transportation (TxDOT) districts to target safety investments with more confidence and reduce crashes on Texas highways. Many predictive and systemic analysis tools are now available that provide the means to quantify safety impacts in a similar way so ...
  • Evaluating Effectiveness of Crash Type SPFs in Safety Management Comparing the Effectiveness of Network Screening and Diagnostic Methods Using Aggregate SPFs and Test of Proportion With Crash Type SPFs
    Evaluating Effectiveness of Crash Type SPFs in Safety Management: Comparing the Effectiveness of Network Screening and Diagnostic Methods Using Aggregate SPFs and Test of Proportion With Crash Type SPFs
    Kononov, Jake ;
    Williams, Jim
    2020-10-01 | PDF
    The intent of this project is to compare the effectiveness of network screening and diagnostic methods using aggregate SPFs and Test of Proportions with crash type SPFs. Both methods were applied to the same datasets containing crash history and exposure data. Sixteen (16) frequency and severity Colorado-specific crash type SPFs were developed for ...
  • Reduce Pedestrian Fatal Crashes in Louisiana by Improving Lighting Conditions Research Project Capsule 192SA
    Reduce Pedestrian Fatal Crashes in Louisiana by Improving Lighting Conditions: Research Project Capsule [19-2SA]
    Thapa, Raju ;
    Rupnow, Tyson
    2020-10-01 | PDF
    The primary objective of this study is to investigate the impact of lighting conditions on pedestrian crashes. The major objectives are learning and documenting lighting policies, guidelines, and practices in Louisiana as well as other states. Emphasis will be given to street lighting policies with a focus on pedestrians. Secondly, lighting conditi ...
  • LED Snowplow Lights Evaluation Report
    LED Snowplow Lights – Evaluation Report
    Fogg, Daniel J ;
    Evans, Lane W
    2020-10-01 | PDF
    The New Hampshire Department of Transportation (NHDOT) snowplow fleet currently uses halogen lights mounted on the push frame for night time snowplowing operations. Due to the excessive vibration, frequent bulb replacement is necessary. Light-emitting diodes (LEDs) are less susceptible to vibrations and could reduce long term maintenance cost. Plow ...
  • Reducing Flood Vulnerability of Communities with Limited Road Access by Optimizing Bridge Elevation
    Reducing Flood Vulnerability of Communities with Limited Road Access by Optimizing Bridge Elevation
    Turner, David ;
    van de Lindt, John W.
    2020-10-01 | PDF
    On September 11-17, 2013, Colorado suffered devastating and widespread flash flooding over 150 miles from Colorado Springs north to Fort Collins, impacting 24 counties. The flood damaged several bridges and over 400 miles of state roads. As a result of the transportation damage, residents of Drake, Colorado, were isolated and had to be evacuated vi ...
  • Proper Overlay Type and Designs for PCC Pavement
    Proper Overlay Type and Designs for PCC Pavement
    Choi, Pangil ;
    Won, Hoonill
    2020-10-01 | PDF
    As of 2016, TxDOT managed a total of 16,327 lane miles of Portland cement concrete (PCC) pavement, which represents an important asset to TxDOT. As PCC pavements in Texas built in the 1960s through 1980s have already exceeded or are approaching the end of their design lives, many of these projects will require some form of rehabilitation. Consideri ...
  • Guides for System To Render ME Traffic Data for Pavement Design Student Guide
    Guides for System To Render M-E Traffic Data for Pavement Design: Student Guide
    Walubita, Lubinda F. ;
    Lee, Sang Ick
    2020-10-01 | PDF
    This guideline is to demonstrate and provide the key findings of Texas Department of Transportation (TxDOT) Project 0-6940 Develop System to Render Mechanistic-Empirical Traffic Data for Pavement Design. It can be used as a guide for rendering the traffic data required for FPS and mechanistic-empirical (ME) pavement designs for TxDOT engineers. Thi ...
  • The Impacts of Increased Adverse Weather Events on Freight Movement
    The Impacts of Increased Adverse Weather Events on Freight Movement
    Hyun, Kate Kyung ;
    Mattingly, Stephen P.
    2020-10-01 | PDF
    Freight transportation is a major economic backbone of the United States and is vital to sustaining the nation’s economic growth. Ports, as one of the primary components of freight transportation and important means of integrating into the global economic system, have experienced significant growth and increased capacity during the past two decades ...
  • Development of Corrosion Inhibiting Geopolymers Based Cement for Transportation Infrastructure [supporting datasets]
    Castaneda-Lopez, Homero ;
    Radovic, Miladin
    2020-10-01 | ZIP
    Geopolymers are gaining attention as affordable, sustainable, and eco-friendly replacement for Ordinary Portland Cement (OPC) in concrete civil structures. More importantly, Geopolymer-based Cement (GPC) provide sustainable and environmentally friendly alternative to OPCs as GPC can be processed at room temperatures from aqueous solutions of waste ...
    Dataset Supporting Files
  • Transportation Performance Management for System Operations Development of Processes Tools Measures and Targets
    Transportation Performance Management for System Operations: Development of Processes, Tools, Measures and Targets
    Amekudzi-Kennedy, Adjo A ;
    Clark, Russell
    2020-10-01 | PDF
    This study identifies effective practices for transportation systems management and operations (TSMO) at the strategic, programmatic and tactical level, assesses Georgia Department of Transportation’s status using the TSMO Capability Maturity Model (CMM), and offers recommendations to move the agency to the next level. The study develops a tool for ...
  • Advanced NonDestructive Bridge Deck Condition Assessment
    Advanced Non-Destructive Bridge Deck Condition Assessment
    Rezvani, Amir
    2020-10-01 | PDF
    Iowa Department of Transportation expressed an interest in commissioning Infratek Solutions Inc. to provide its next-generation bridge deck assessment and analysis services (insight) to Iowa’s selected bridge inventory. To meet this objective, Iowa has initiated a research study with the goal of exploring and refining how advanced NDE assessment te ...
  • Enhancing Evaluation of Wildlife Detection Systems
    Enhancing Evaluation of Wildlife Detection Systems
    Ferenchak, Nicholas N.
    ORCID ICON IMG
    2020-10-01 | PDF
    Every year in the United States, wildlife-vehicle collisions (WVCs) cause 200 human fatalities, 26,000 human injuries, and substantial harm to wildlife populations, resulting in approximately $8.4 billion in total costs. The research team examined two US 64 bridges located near Lumberton, New Mexico that were designed to allow wildlife to cross und ...
  • Quiet Zone Study for Dolton and Riverdale
    Quiet Zone Study for Dolton and Riverdale
    Sriraj, P S ;
    Fazio, Joseph
    2020-10-01 | PDF
    Located in south suburban Cook County, approximately 22 miles (35 km) south of downtown Chicago, the Village of Dolton and Village of Riverdale are investigating options to improve safety at at-grade rail crossings and to minimize the impact of train horn noise throughout their communities. The Federal Railroad Administration (FRA) in 2005 issued Q ...
  • Transit Signal Progression Algorithm for Supporting Redwood Road Transit Signal Priority TSP
    Transit Signal Progression Algorithm for Supporting Redwood Road Transit Signal Priority (TSP)
    Wang, Qinzheng ;
    Yang, Xianfeng (Terry)
    2020-10-01 | PDF
    In 2017, a connected vehicle (CV) corridor utilizing dedicated short-range communication (DSRC) technology was built along Redwood Road in Salt Lake County, Utah. The main purpose of the CV corridor was to implement transit signal priority (TSP) when a bus is running behind its published schedule. The performance data was generated by the transit v ...
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