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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 5741 - 5760 of 36990 results
  • HandHeld Diagnostic Controller for ITS Field Maintenance Phase II
    Hand-Held Diagnostic Controller for ITS Field Maintenance Phase II
    Donecker, Stephen M. ;
    Swanston, Travis
    2019-10-11 | PDF
    The Caltrans field element network includes several hundred changeable message signs (CMS), generically referred to as dynamic message signs (DMS), and many more closed-circuit TV (CCTV) cameras. The number of these elements motivates development of diagnostic tools that are handheld, quick, inexpensive, and straightforward for maintenance staff. T ...
  • Improving Effectiveness of HOV Facilities Behavioral and Operational Considerations
    Improving Effectiveness of HOV Facilities – Behavioral and Operational Considerations
    McDonald, Mark P
    2019-10-10 | PDF
    This report documents and details the work done on Project RES 2017-01, Improving Effectiveness of HOV Facilities - Operational and Behavioral Considerations. In this project, the problem of the extremely high violation rates in Nashville’s High Occupancy Vehicle (HOV) lanes is considered. Specifically, the project seeks to: (1) document the curren ...
  • Consumer Use Adoption of Advanced Vehicle Systems
    Consumer Use & Adoption of Advanced Vehicle Systems
    Seppelt, Bobbie ;
    Coughlin, Joseph F.
    2019-10-10 | PDF
    Despite an abundant use of the term “Out of the loop” (OOTL) in the context of automated driving and human factors research, there is currently a lack of consensus on its precise definition, how it can be measured, and the practical implications of being in or out of the loop during automated driving. The main objective of this paper is to consider ...
  • Measuring the Impact of a Landslide on Transportation Infrastructure to Improve Mobility and Safety
    Measuring the Impact of a Landslide on Transportation Infrastructure to Improve Mobility and Safety
    Darrow, Margaret M. ;
    Schwarber, Jaimy
    2019-10-10 | PDF
    Frozen debris lobes (FDLs) are landslides in permafrost, many located along the Dalton Highway corridor, Brooks Range, Alaska. The closest to the highway, FDL-A has demonstrated a steadily increasing rate of movement over the last several decades. Recognizing the risk, in 2018 the Alaska Department of Transportation and Public Facilities (ADOT&PF) ...
  • Technology Influence on Travel Demand and Behaviors [supporting datasets]
    Sisiopiku, Virginia P. ;
    Hadi, Mohammed
    2019-10-08 | PDF
    Over the last decade, the popularity of Transportation Network Companies (TNCs) as a mode of travel has been increasing at a steady pace, even in medium size cities. However, the determinants that influence transportation users to adopt TNCs as a preferred mode choice are still not well understood, nor are the impacts of such preferences on their t ...
    Dataset Supporting Files
  • Reducing Wildlife Mortality on Roads in Vermont Determining Relationships Between Structure Attributes and Wildlife Movement Frequency Through Bridges and Culverts To Improve Related Conservation Investments
    Reducing Wildlife Mortality on Roads in Vermont: Determining Relationships Between Structure Attributes and Wildlife Movement Frequency Through Bridges and Culverts To Improve Related Conservation Investments
    Marangelo, Paul
    ORCID ICON IMG
    2019-10-08 | PDF
    This project gathered and analyzed game-camera data on the frequency of wildlife movement through bridges and culverts in Vermont to generate results-based recommendations for improving the permeability of highways in Vermont for wildlife. By better understanding the characteristics of transportation structures that wildlife are more likely to use ...
  • Development of a Strategy to Address Load Posted Bridges Through Reduction in Uncertainty in Load Ratings TxDOT Workshop
    Development of a Strategy to Address Load Posted Bridges Through Reduction in Uncertainty in Load Ratings: TxDOT Workshop
    Texas A&M University. Zachry Department of Civil Engineering  ...
    2019-10-07 | PDF
    Development of a strategy to address load posted bridges through reduction in uncertainty in load ratings TxDOT workshop PowerPoint presentation.
  • Development of a Strategy To Address Load Posted Bridges Through Reduction in Uncertainty in Load Ratings TxDOT Workshop
    Development of a Strategy To Address Load Posted Bridges Through Reduction in Uncertainty in Load Ratings: TxDOT Workshop
    Texas A&M Transportation Institute
    2019-10-07 | PDF
    Determine appropriate strategies to remove load postings for Texas bridges posted at load levels below the legal limit.
  • A Study to Determine if the Biofuel Crop Camelina is a Wildlife Attractant Phase I and partial Phase II
    A Study to Determine if the Biofuel Crop Camelina is a Wildlife Attractant (Phase I and partial Phase II)
    Chinn, Mari S ;
    Godfrey III, Edward E
    2019-10-02 | PDF
    Airport managers have significant annual operating costs tied to maintaining airport green space that can often exceed hundreds of acres and often face challenges with high fuels costs to operate ground vehicles. This project was initiated to explore modifying the land use around airports to support the production of oilseeds and other biomass crop ...
  • The Impact of Emerging Technologies and Trends on Travel Demand in Georgia
    The Impact of Emerging Technologies and Trends on Travel Demand in Georgia
    Kim, Sung Hoo ;
    Mokhtarian, Patricia L.
    2019-10-01 | PDF
    This study aims to enhance understanding of the impact of new and emerging technologies on travel behavior/demand for the state of Georgia, and, thus, potentially contribute to improving transportation planning and demand forecasting for Georgia residents. In this project, the research team designed and implemented a wide-ranging travel survey that ...
  • Investigating Safety Impact of Center Line Rumble Strips Lane Conversion Roundabout and JTurn Features on Louisiana Highways
    Investigating Safety Impact of Center Line Rumble Strips, Lane Conversion, Roundabout, and J-Turn Features on Louisiana Highways
    Sun, Xiaoduan ;
    Rahman, M Ashifur
    2019-10-01 | PDF
    Over the past several years, Louisiana has installed quite a few relatively new crash countermeasures, such as center line rumble strips (CLRS) on rural two-lane highways, restriping four-lane undivided roadways to three-lane or five-lane roadways with center lane for left turns, restricting median openings on high speed corridors (RCUT), and round ...
  • Informing a Pilot Preparing the PreLaunch Survey for the Davis Amtrak Station Access Program
    Informing a Pilot: Preparing the Pre-Launch Survey for the Davis Amtrak Station Access Program
    Pike, Susan ;
    Kothawala, Alimurtaza
    2019-10-01 | PDF
    This study investigates barriers to accessing the Davis Amtrak Station and will inform a pilot program to increase access to the station with on-demand alternatives. The program aims to decrease private vehicle use to access the station and for travel to locations outside of Davis. Currently, the Davis station has the third highest passenger usage ...
  • Access Management Best Practices
    Access Management Best Practices
    Kirk, Adam ;
    Van Dyke, Chris
    2019-10-01 | PDF
    Research has persistently demonstrated that adopting a systematic access management framework improves highway operations and bolsters safety. Many state transportation agencies have adopted formal access management programs to systematize the application of access management techniques, however, the Kentucky Transportation Cabinet (KYTC) been unab ...
  • Concrete Bridge Deck Performance Data and Metrics for the State of Oregon
    Concrete Bridge Deck Performance Data and Metrics for the State of Oregon
    Wettach-Glosser, Jael ;
    Schumacher, Thomas
    2019-10-01 | PDF
    This report reviews the research on data and metrics related to concrete bridge deck performance for the state of Oregon. With guidance from the literature and ODOT personnel, two datasets were created with data currently available through ODOT and the NBI to evaluate concrete bridge deck performance. Using these datasets, a survival analysis was p ...
  • Connected Vehicle Corridor Deployment and Performance Measures for Assessment
    Connected Vehicle Corridor Deployment and Performance Measures for Assessment
    Li, Howell ;
    Mathew, Jijo K
    2019-10-01 | PDF
    In November 2016, the American Association of State Highway and Transportation Officials (AASHTO) announced the Signal Phase and Timing (SPaT) challenge to state and local agencies to kick start infrastructure deployments for V2I communications. The challenge involved the deployment of Dedicated Short Range Communication (DSRC) infrastructure with ...
  • CalibrationDevelopment of Safety Performance Functions for New Jersey
    Calibration/Development of Safety Performance Functions for New Jersey
    Ozbay, Kaan ;
    Nassif, Hani
    2019-10-01 | PDF
    Safety Performance Functions (SPFs) in the Highway Safety Manual (HSM) were developed using historic crash data collected in different states. Because local state or geographic conditions vary, to make the SPFs better accommodate the local data, two strategies are usually undertaken: the first strategy is to calibrate SPFs provided in HSM so that t ...
  • Commuter Bus Demand Incentives for Modal Shift and Impact on Greenhouse Gas Emissions Part II Service Delivery Concepts
    Commuter Bus Demand, Incentives for Modal Shift, and Impact on Greenhouse Gas Emissions: Part II – Service Delivery Concepts
    Gonzales, Eric J. ;
    Christofa, Eleni
    2019-10-01 | PDF
    This report is a continuation of a project to model and evaluate the potential to reduce greenhouse gas (GHG) emissions by expanding express commuter bus services in the Greater Boston area. First, data for socioeconomic factors in the Central Transportation Planning Staff (CTPS) travel demand model are collected to improve model accuracy. Second, ...
  • Rail Track Asset Management and Risk Management
    Rail Track Asset Management and Risk Management
    Zhang, Zhipeng ;
    Oladipo, Olufemi
    2019-10-01 | PDF
    The United States has the most extensive rail network in the world. Freight rail carries over 43% of ton-miles of goods and passenger rail transports millions of passengers annually. Track infrastructure is the most valuable asset to the rail industry. Also, track infrastructure quality is critical for rail safety and risk management. Despite billi ...
  • Traveler Information for the Commercial Vehicle Operations Community
    Traveler Information for the Commercial Vehicle Operations Community
    Flintsch, Alejandra Medina ;
    Li, Yingfeng (Eric)
    2019-10-01 | PDF
    Traveler information is critical for the safety and efficiency of commercial vehicle operations (CVO). The objectives of this project are to (a) review traveler information technologies and practices in Virginia, (b) understand CVO community information needs, (c) document data availability to support a CVO information system, and (d) recommend a f ...
  • Development of Automated Incident Detection System Using Existing ATMS CCTV
    Development of Automated Incident Detection System Using Existing ATMS CCTV
    Chen, Stanley ;
    Chen, Yaobin
    2019-10-01 | PDF
    Indiana Department of Transportation (INDOT) has over 300 digital cameras along highways in populated areas in Indiana. These cameras are used to monitor traffic conditions around the clock, all year round. Currently, the videos from these cameras are observed by human operators. The main objective of this research is to develop an automatic real-t ...
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