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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 7921 - 7940 of 36151 results
  • Successful Practices in WeighinMotion Data Quality with WIM Guidebook Volumes 1 2
    Successful Practices in Weigh‐in‐Motion Data Quality with WIM Guidebook [Volumes 1 & 2]
    Selezneva, Olga ;
    Wolf, Dean J.
    2017-07-01 | PDF
    The Arizona Department of Transportation (ADOT) plans to install new weigh‐in‐motion (WIM) stations with either piezo-polymer or piezo-quartz sensors. Recognizing some limitations of WIM sensor technologies, ADOT sponsored this study to ensure the accuracy of the future WIM data collection. The project tasks included (1) reviewing other highway age ...
    Supporting Files
  • Strategic Scheduling of Infrastructure Repair and Maintenance Volume 1 Decision Tree for Steel Bridge Painting
    Strategic Scheduling of Infrastructure Repair and Maintenance: Volume 1 - Decision Tree for Steel Bridge Painting
    Agbelie, Bismark R. ;
    Fricker, Jon D.
    2017-07-01 | PDF
    Even for the right treatment, improper timing can have consequences: premature application (treatment is applied too early) could mean wasteful spending even if users enjoy the benefits of higher pavement condition; deferred or delayed application (treatment is applied too late) could result in higher user costs due to poor condition and even reduc ...
  • ImageBased Collection and Measurements for Construction Pay Items
    Image-Based Collection and Measurements for Construction Pay Items
    Yeum, Chul Min ;
    Mohan, Anup
    2017-07-01 | PDF
    Prior to each payment to contractors and suppliers, measurements are made to document the actual amount of pay items placed at the site. This manual process has substantial risk for personnel, and could be made more efficient and less prone to human errors. In this project a customized software tool package has been developed to address these conce ...
  • What do we know about location affordability in US shrinking cities
    What do we know about location affordability in U.S. shrinking cities?
    Ganning, Joanna ;
    Tighe, Jenna Rosie
    2017-07-01 | PDF
    In late 2013, the Department of Housing and Urban Development (HUD) launched the Location Affordability Index (LAI) portal. Their dataset uses models to estimate typical amount households spend on housing and transportation at the block group level, and calculates “H + T Affordability,” the percent of household income spent on these items. In our p ...
  • Intelligent dilemma zone protection system at highspeed intersections research summary
    Intelligent dilemma zone protection system at high-speed intersections : research summary.
    Maryland. State Highway Administration. Research Division
    2017-07-01 | PDF
    Drivers’ actions in an intersection’s dilemma zone – the area where the decision to stop at a yellow light or continue through it is not clear-cut – can lead to side-angle and rear-end crashes. In Maryland, researchers developed an intelligent dilemma zone protection system (DZPS) that is reducing these crashes by anticipating drivers’ decisions an ...
  • Proposal for monitoring concrete painting as a preventive maintenance tool Abutments and pier caps
    Proposal for monitoring concrete painting as a preventive maintenance tool (Abutments and pier caps).
    Wells, Danny ;
    Palle, Sudhir
    2017-07-01 | PDF
    One of the growing number of preventive bridge maintenance activities conducted by the Kentucky Transportation Cabinet (KYTC) is washing and applying thin film protective coatings to bridge abutments and piers. Previous work conducted by Kentucky Transportation Center (KTC) under KYSPR 10-406 documented increased chloride contamination of these bri ...
  • Active Work Zone Safety Using Emerging Technologies Final Report
    Active Work Zone Safety Using Emerging Technologies : Final Report
    Cho, Yong Kwon ;
    Yang, Xiaoyu
    2017-07-01 | PDF
    The major objectives of this research were to (1) identify technologies that can be used in real time to detect a hazardous proximity situation between construction equipment and pedestrian workers and provide an appropriate warning; (2) develop a Bluetooth-based proximity alert system; and (3) evaluate the reliability and effectiveness of the tech ...
  • Analysis of Local Bus Markets Volume II Rider Characteristics
    Analysis of Local Bus Markets: Volume II – Rider Characteristics
    Deka, Devajyoti
    2017-07-01 | PDF
    Despite having an extensive network of public transit, traffic congestion and transportation-related greenhouse gas (GHG) emissions are significant concerns in New Jersey. This research hypothesizes that traffic congestion and air quality concerns in the state would be much greater in the absence of public transit. With this hypothesis, the study e ...
  • Infrastructure Issues Related to InMotion Wireless Power Transfer
    Infrastructure Issues Related to In-Motion Wireless Power Transfer
    Halling, Marvin W. ;
    Gardner, Trevor
    2017-07-01 | PDF
    Integrating wireless power transfer (WPT) systems into the infrastructure represents a major hurdle in the large-scale adoption of electric vehicles (EVs). It is proposed that inductive power transfer (IPT)technology be directly embedded into a pavement structure. The successful integration of IPT systems has several requirements. First, the embedm ...
  • Analysis of Local Bus Markets Volume III Travel Characteristics
    Analysis of Local Bus Markets: Volume III – Travel Characteristics
    Deka, Devajyoti
    2017-07-01 | PDF
    Despite having an extensive network of public transit, traffic congestion and transportation-related greenhouse gas (GHG) emissions are significant concerns in New Jersey. This research hypothesizes that traffic congestion and air quality concerns in the state would be much greater in the absence of public transit. With this hypothesis, the study e ...
  • Line Laser and Triple Laser Quantification of the Difference in International Roughness Index between Textured and NonTextured Strips
    Line Laser and Triple Laser Quantification of the Difference in International Roughness Index between Textured and Non-Textured Strips
    Izevbekhai, Bernard Igbafen ;
    Ahn, Hung Jun
    2017-07-01 | PDF
    Practitioners have often wondered whether, during ride measurement with inertial devices, the motion of the laser through pavement texture introduces non representative values of international roughness index (IRI), particularly in certain textures. In response to this problem, a special texture study created a non-textured strip by a recession of ...
  • Guardrail and Bridge Rail Recommendations for Very LowVolume Local Roads in Kansas Addendum to Include Bridges Up to 100 Feet Long and Traffic Volume Up to 100 Vehicles Per Day
    Guardrail and Bridge Rail Recommendations for Very Low-Volume Local Roads in Kansas: Addendum to Include Bridges Up to 100 Feet Long and Traffic Volume Up to 100 Vehicles Per Day
    Seitz, Ronald J. ;
    Salfrank, Tod
    2017-07-01 | PDF
    In 2014, the Kansas Department of Transportation undertook a study, entitled “Guardrail and Bridge Rail Recommendations for Very Low-Volume Local Roads in Kansas” (Report No. KS-14-16, Seitz & Salfrank, 2014), to establish practical risk-based guidelines and policies for bridge rails and guardrails on low-volume local roads in the state. The purpos ...
  • Evaluation of safety and mobility of twolane roundabouts final report
    Evaluation of safety and mobility of two-lane roundabouts : final report.
    Parikh, Gordon ;
    Hourdos, John
    2017-07-01 | PDF
    When looking at measures of fatal and severe-injury crashes, roundabouts have demonstrated improved safety performance compared to traditional signalized intersections. Despite this, when it comes to less severe crashes, multilane roundabouts fail to provide a similar benefit. Previous research into this topic has identified behaviors that are asso ...
  • Best management practices for establishment of salttolerant grasses on roadsides final report
    Best management practices for establishment of salt-tolerant grasses on roadsides : final report.
    Watkins, Eric ;
    Trappe, Jon
    2017-07-01 | PDF
    Roadsides are a unique growing environment for turf grasses and can be a challenge to establish and maintain. The University of Minnesota turf grass research program has been investigating low-input turf grasses that are better adapted for roadsides and our previous research project identified a new mixture for use on Minnesota roadsides that was a ...
  • User guide process for quantifying the benefits of research
    User guide : process for quantifying the benefits of research.
    Preston, Howard ;
    Bennett, Jacqueline Dowds
    2017-07-01 | PDF
    The Minnesota Department of Transportation Research Services has adopted a process for quantifying the monetary benefits of research projects, such as the dollar value of particular ideas when implemented across the state’s transportation system. This process is adaptable to a variety of research topics and benefit categories. Research Services has ...
  • Highway work zone intrusion alert systems implementation guide
    Highway work zone intrusion alert systems implementation guide.
    Marks, Eric
    2017-07-01 | PDF
    Adopting new technology and innovation is vital for governmental entities to effectively conduct business for its citizens. One major challenge of capturing and realizing the multitude of benefits produced by innovative safety technologies is proper implementation of such systems. This guide provides recommendations and best practices for implement ...
  • Development of Revised Grade Crossing Hazard Index Model
    Development of Revised Grade Crossing Hazard Index Model
    Ryan, Christopher ;
    Mielke, Andrew
    2017-07-01 | PDF
    The Nevada Department of Transportation (NDOT) plays a key role in addressing highway-rail grade crossing safety issues by allocating federal funding through the Railway-Highway Crossing (Section 1030) Program. This Program requires each state to select eligible projects through a data-driven project selection and prioritization process. NDOT curre ...
  • Impacts of bus rapid transit BRT on surrounding residential property values final report
    Impacts of bus rapid transit (BRT) on surrounding residential property values : final report.
    Perk, Victoria A. ;
    Catala, Martin
    2017-07-01 | PDF
    As bus rapid transit (BRT) grows in popularity in the United States, a better understanding of the mode’s impacts on land uses and property values is needed. Economic theory suggests, and literature has shown, that people are willing to pay higher housing costs to lower their costs of transportation to areas of economic activity. Does high-quality ...
  • Intelligent dilemma zone protection system at highspeed intersections final report
    Intelligent dilemma zone protection system at high-speed intersections : final report.
    Park, Sung Yoon ;
    Chang, Gang-Len
    2017-07-01 | PDF
    Drivers’ actions in an intersection’s dilemma zone – the area where the decision to stop at a yellow light or continue through it is not clear-cut – can lead to side-angle and rear-end crashes. In Maryland, researchers developed an intelligent dilemma zone protection system (DZPS) that is reducing these crashes by anticipating drivers’ decisions an ...
  • Tailgate test kit for determining appropriate sediment reducing chemicals and dose rates final report
    Tailgate test kit for determining appropriate sediment reducing chemicals and dose rates : final report.
    Toso, Joel ;
    Templin, Kirby
    2017-07-01 | PDF
    This study develops a Tailgate Test Kit to be used in the field to test flocculants for reducing turbidity in construction stormwater discharge. Turbidity of stormwater runoff at construction sites varies depending on which site soils are exposed to erosion. Previous research shows that the effectiveness of different flocculants also varies dependi ...
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