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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 1121 - 1140 of 35448 results
  • Integrating Mobility Energy Productivity Metric into the CDOT Statewide Model
    Integrating Mobility Energy Productivity Metric into the CDOT Statewide Model
    Hoehne, Christopher ;
    Garikapati, Venu
    2024-02-01 | PDF
    The Mobility Energy Productivity (MEP) metric measures the quality of mobility at a specific location and can be used to evaluate how changes to transportation systems impact the mobility of that location over time, such as through infrastructure investments. The objective of this study is to demonstrate integration of the MEP metric into CDOT’s tr ...
  • Analyzing Human Mobility for Active Transportation Planning in Louisiana
    Analyzing Human Mobility for Active Transportation Planning in Louisiana
    Bian, Ruijie “Rebecca” ;
    Tolford, Tara
    2024-02-01 | PDF
    Existing walking and biking data are often insufficient to support active transportation planning activities. This study utilized an emerging large-scale human mobility dataset to identify places with a higher number of short-distance trips to non-residential locations. These locations are more likely to be served by active modes of transportation, ...
  • Analyzing Human Mobility for Active Transportation Planning in Louisiana Technical Summary
    Analyzing Human Mobility for Active Transportation Planning in Louisiana [Technical Summary]
    Bian, Ruijie “Rebecca” ;
    Mitran, Elisabeta
    2024-02-01 | PDF
    The main objective of the research is to identify areas in Louisiana that require active transportation infrastructure (such as sidewalks and crosswalks) the most. The needs were determined based on continuously collected anonymous human mobility data from mobile devices. An active transportation mobility index was developed based on the human mobi ...
  • OSTR Research Roundup Newsletter February 2024
    OST-R Research Roundup Newsletter: February 2024
    United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
    2024-02-01 | OST-R Research Roundup | PDF
    News from across OST-R and its research community.
  • Eastern Massasauga Rattlesnake Sistrurus catenatus Detection and Space Use Near Roads in the Southern Lower Peninsula of Michigan USA
    Eastern Massasauga Rattlesnake (Sistrurus catenatus) Detection and Space Use Near Roads in the Southern Lower Peninsula of Michigan, USA
    Rajewski, Jillian A ;
    Campa III, Henry R
    2024-02-01 | PDF
    Roads are a source of mortality for federally threatened eastern massasauga rattlesnakes (EMR; Sistrurus catenatus) in Michigan. However, a clear understanding of space use and habitat selection of EMR near roads is lacking. Identifying when, where, and why EMR use spaces near roads could inform decisions that reduce the risk of road-related mortal ...
  • Careers with Minnesotas Public Transportation Agencies Focus Group Summary Report
    Careers with Minnesota’s Public Transportation Agencies [Focus Group Summary Report]
    University of Minnesota  ...
    2024-02-01 | PDF
    This report contains a summary of the themes, codes, and sub-codes that emerged from the focus group discussions conducted for the Minnesota Local Road Research Board. Four focus groups were conducted between November 15 - 30, 2023 with the featured stakeholder groups: CDL license holders (4 participants), Jobseekers (8 participants), HR profession ...
  • Community Augmented Rapidresponse to Events CARE Integrated Crisis Communication System
    Community Augmented Rapid-response to Events (CARE) Integrated Crisis Communication System
    Salley, Christin ;
    Xie, Jiajia
    2024-02-01 | PDF
    This project explores the potential of integrating social media data (i.e., Twitter/X) with data from community awareness applications (i.e., Waze) to bolster crisis communication and enhance the accuracy and promptness of incident identification, assessment, and reporting during emergencies. To navigate the challenges posed by varied data formats ...
  • Traffic Safety Evaluation of Lane Constrictor Intersections in Minnesota
    Traffic Safety Evaluation of Lane Constrictor Intersections in Minnesota
    Moreland, Max ;
    Leuer, Derek
    2024-02-01 | PDF
    Between 2018 and 2019, MnDOT installed a lane constrictor design at 66 side-street, stop-controlled intersections in Minnesota. The lane constrictor design narrows the lane width for mainline approaches via a striped median with centerline rumble strips. By narrowing the mainline lane, the goal of this design is to encourage mainline traffic to slo ...
  • Using the Portable XRF To IdentifyVerify Field Material Properties Technical Summary
    Using the Portable XRF To Identify/Verify Field Material Properties [Technical Summary]
    Liu, Zhen ;
    Cooper, Samuel B.
    2024-02-01 | PDF
    Portable spectroscopy technologies such as X-Ray Fluorescence (XRF) are proposed for a rapid identification of chemical compounds or detection of certain additives or contaminants in some commonly used construction materials in Portland cement concrete, structural coatings, or pavement markings. The ability to provide fast verification in the field ...
  • Guidebook for Application of PolymerModified Asphalt Overlays From DecisionMaking to Implementation
    Guidebook for Application of Polymer-Modified Asphalt Overlays: From Decision-Making to Implementation
    Sassani, Alireza ;
    Lawal, Abdulazeez
    2024-02-01 | PDF
    After the successful experiences of multiple transportation agencies in adopting the usage of polymer-modified asphalt (PMA) cement overlays, now is the time to advocate for the implementation of this pavement preservation technique. Despite the affirmative endorsements from numerous departments of transportation (DOT), a structured process for sys ...
  • Guidebook for Application of PolymerModified Asphalt Overlays From DecisionMaking to Implementation Tech Transfer Summary
    Guidebook for Application of Polymer-Modified Asphalt Overlays: From Decision-Making to Implementation [Tech Transfer Summary]
    Smadi, Omar ;
    Sassani, Alireza
    2024-02-01 | PDF
    The goal of the project was to lay the groundwork for the integration of PMA overlays into transportation agencies’ overall pavement preservation strategies by developing a guidebook that offers insights into the implementation and efficacy of the technique. The objectives were to survey the experiences of transportation agencies using PMA overlays ...
  • Domestic Airline Fares Consumer Report Third Quarter 2023 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: Third Quarter 2023 Passenger and Fare Information
    United States. Department of Transportation
    2024-02-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • Seat Belt Use in 2023 Overall Results Traffic Safety Facts Research Note
    Seat Belt Use in 2023 – Overall Results [Traffic Safety Facts - Research Note]
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2024-02-01 | PDF
    The national estimate of seat belt use by adult front-seat passengers in 2023 was 91.9 percent, a record high although not statistically different (at the 0.05 level) from 91.6 percent observed in 2022. The seat belt use rate estimate represents the percentage of occupants who are belted during an average daylight moment. The 2023 data collection o ...
  • Measuring the Livability Framework Transportation Research Synthesis
    Measuring the Livability Framework [Transportation Research Synthesis]
    Maze, Haila ;
    Flannery, Cody
    2024-02-01 | PDF
    The Minnesota Department of Transportation (MnDOT) Office of Livability established the Livability Framework to guide transportation policies, programs, and/or projects toward improved, people-focused outcomes. The Livability Framework proposes seven (7) Livability Pillars to be considered as part of the planning and implementation of these activit ...
  • Evaluation of Spring Load Restriction Removal Protocols
    Evaluation of Spring Load Restriction Removal Protocols
    Miller, Heather ;
    Orr, David P.
    2024-02-01 | PDF
    Deciding when to remove spring load restrictions (SLRs) on roadways is complicated given the variable time window during and after thawing when excess moisture remains in the base and subgrade layers, causing the overall roadway structure to remain weak. The main objective of this project was to develop an economical and easy-to-use protocol for ti ...
  • Evaluation of Spring Load Restriction Removal Protocols Brief
    Evaluation of Spring Load Restriction Removal Protocols [Brief]
    Miller, Heather
    2024-02-01 | PDF
    An economical and easy-to-use protocol for timing removal of spring load restrictions was developed based on knowledge about a roadway’s structure, base layers, and subgrade soils and the approximate depth to the groundwater table.
  • Pilot Study on Improving Crash Data Accuracy in Kentucky through University Collaboration
    Pilot Study on Improving Crash Data Accuracy in Kentucky through University Collaboration
    Fields, Michael A. ;
    Green, Eric
    2024-02-01 | PDF
    Without high-quality crash data and robust interpretive/analytical tools to analyze these data, transportation agencies will struggle to develop evidence-based strategies for improving road safety. Crash narratives are one element of crash reports that pose especially acute interpretive challenges. These narratives supplement coded data and give an ...
  • Evaluation of Pavement ME Design Software for Flexible Pavements Summary
    Evaluation of Pavement ME Design Software for Flexible Pavements [Summary]
    Hayden, Mary Jane ;
    Goehl, Darlene C
    2024-02-01 | PDF
    The objectives of this research were to 1) provide the first step for the implementation of ME design for flexible pavements in Florida by comparing the 93 Method to the ME Design Method, 2) predict distresses to observed distresses of the PMED Version 2.6, and 3) provide recommendations for Florida-specific input parameters for the PMED Version 2. ...
  • Microsimulation Department Assessment and Guidance Summary
    Microsimulation: Department Assessment and Guidance [Summary]
    Hill, Thomas ;
    Hadi, Mohammad
    2024-02-01 | PDF
    The goal of this research project was to provide guidance and direction to improve FDOT’s microsimulation modeling practice.
  • Counting Airport Operations Using Aircraft Transponder Signals andor Aircraft Automatic Dependent SurveillanceBroadcast ADSB Data
    Counting Airport Operations Using Aircraft Transponder Signals and/or Aircraft Automatic Dependent Surveillance-Broadcast (ADS-B) Data
    Pesce, John ;
    Rashedi, Ramin
    2024-02-01 | PDF
    Accurate estimation of daily and annual aircraft operations at airports is vital for various objectives, including airport planning, funding allocation, and aviation forecasts. However, obtaining precise operational data from airports without control towers has been challenging. In 2018, the Florida Department of Transportation (FDOT) published an ...
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