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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 5181 - 5200 of 36022 results
  • Enhancing Cybersecurity in Public Transportation Summary
    Enhancing Cybersecurity in Public Transportation [Summary]
    Ligatti, Jay
    2019-12-01 | PDF
    University of South Florida researchers developed guidance to identify and mitigate transit cybersecurity liabilities and to facilitate ongoing information exchange among Florida transit agencies, vendors, and cybersecurity researchers
  • GO ITHACA Downtown Ithaca Alliance Pilot Transportation Demand Management Program
    GO ITHACA: Downtown Ithaca Alliance Pilot Transportation Demand Management Program
    Wilber, Darlene M ;
    Ferguson, Gary
    2019-12-01 | PDF
    GO ITHACA is a downtown Ithaca-based personalized educational campaign that encourages downtown employees and residents who are single occupant vehicles users to learn about and sample sustainable modes of transportation such as walking, biking, transit and car-sharing through incentives customize to each program participant as a move towards livin ...
  • Integration of a Robust Automated Pedestrian Detection System for Signalized Intersections
    Integration of a Robust Automated Pedestrian Detection System for Signalized Intersections
    Lin, Pei-Sung ;
    Kourtellis, Achilleas
    2019-12-01 | PDF
    Improving pedestrian safety and making roadway facilities safer and friendlier for pedestrians are among the top priorities and transportation goals in Florida. The actuation of pedestrian “Walk” signal indications at signalized intersections and the triggering of rectangular rapid flash beacons (RRFBs) or high-intensity activated crosswalks (HAWKs ...
  • INDOT Research Program Benefit Cost AnalysisReturn on Investment for Projects Completed in FY 2018
    INDOT Research Program Benefit Cost Analysis—Return on Investment for Projects Completed in FY 2018
    McCullouch, Bob
    2019-12-01 | PDF
    This project produced a financial analysis of Indiana Department of Transportation's (INDOT’s) research projects completed in 2018, as requested annually by the Governor’s office. This analysis uses the approach of calculating net present values created by the implementation of research project to determine benefit cost ratios and return on the res ...
  • Using Safety Contingency Funding to Address Unforeseen Safety Needs During Construction in Texas Factsheet
    Using Safety Contingency Funding to Address Unforeseen Safety Needs During Construction in Texas — Factsheet
    United States. Department of Transportation. Federal Highway Administration. Office of Operations
    2019-12-01 | PDF
    Unforeseen needs often arise during the construction phase of a project. These needs may result in expensive and time-intensive change orders. By developing a safety contingency line item as part of the project estimate phase, TxDOT can address and mitigate numerous challenges during active operations. As a result, the State has seen a significant ...
  • OnDemand Microtransit for Better Transit Station and Job Accessibility
    On-Demand Microtransit for Better Transit Station and Job Accessibility
    Kang, Sanggyun ;
    Hamidi, Shima
    2019-12-01 | PDF
    The purpose of this research is to examine on-demand microtransit as a means of connecting the first-last mile segments of travel by public transit in low-density areas. We also examine the extent to which reduced travel times of first-last miles by on-demand microtransit influence low-wage job accessibility. As a case study, we compare the job acc ...
  • Optimized TaconiteBased Pavement Repair Compound and Deployment System
    Optimized Taconite-Based Pavement Repair Compound and Deployment System
    Zanko, Lawrence M. ;
    Post, Sara P
    2019-12-01 | PDF
    This project refined the Natural Resources Research Institute’s (NRRI's) patented taconite-based repair compound, explored equipment options, and field tested/demonstrated a low-cost mechanized system that can efficiently mix and place the repair compound in larger quantities while minimizing or eliminating direct contact and hand mixing by mainten ...
  • Live Load Testing and Load Rating of Five Skewed Reinforced Concrete TBeam Bridges
    Live Load Testing and Load Rating of Five Skewed Reinforced Concrete T-Beam Bridges
    Schanck, Andrew ;
    Davids, Bill
    2019-12-01 | PDF
    The five skewed reinforced T-beam bridges listed below were tested during the summer of 2018 by the University of Maine (UMaine) in partnership with the Maine Department of Transportation (MaineDOT): (1) Bridge No. 5489 in Levant, carrying Route 222 over Black Stream; (2) Bridge No. 5109 in Hampden, carrying Route 9 over Souadabscook Stream; (3) Br ...
  • Implementing the StrutandTie Method for the Design of Bridge Components
    Implementing the Strut-and-Tie Method for the Design of Bridge Components
    Vicksman, Andi S ;
    Williams, Christopher S
    2019-12-01 | PDF
    The strut-and-tie method (STM) is used for the design of D-regions (disturbed regions) of reinforced concrete structures. Many typical bridge substructure components consist of D-regions and warrant the use of the STM for design. Implementation of the STM is more complex than typical design methods, and engineers are often unfamiliar with the desig ...
  • Analysis of Local Bus Markets Phase II
    Analysis of Local Bus Markets (Phase II)
    Deka, Devajyoti
    2019-12-01 | PDF
    This research is a follow-up of the Analysis of Local Markets study conducted by the Alan M. Voorhees Transportation Center during 2015-17. Whereas the primary objectives of the previous study were to examine both traffic (i.e., congestion) and air quality (i.e., greenhouse gas) impacts of local buses, the primary objective of the current study is ...
  • Multimodal Data Inventory Evaluation to Improve FDOTs Roadway Classification Inventory Summary
    Multimodal Data Inventory Evaluation to Improve FDOT’s Roadway Classification Inventory [Summary]
    Hendricks, Sara ;
    Catala, Martin
    2019-12-01 | PDF
    University of South Florida researchers investigated acceptable inventory methods based on FDOT data accuracy requirements and available technology to determine a methodology of inventory of SUN Trail assets and to identify an efficient, scalable, and acceptable data inventory management design for hardware and/or software investment.
  • Quantifying Pavement Albedo
    Quantifying Pavement Albedo
    Alleman, James ;
    Heitzman, Michael
    2019-12-01 | PDF
    Five portland cement concrete (PCC) and five asphalt concrete (AC) pavement locations at each of seven field testing sites in the central and eastern United States represented a range of aggregate types, pavement surface ages, and climates. Albedo, thermal properties, and pavement surface characteristics data were collected, and cores were obtained ...
  • Historic Survey of Roads in Idahos State Highway System Volume 1 Historic Context
    Historic Survey of Roads in Idaho’s State Highway System Volume 1: Historic Context
    Hronek, Angela ;
    Renfield, Sebastian
    2019-12-01 | PDF
    The multi-volume Historic Survey of Roads in Idaho’s State Highway System provides the development of Idaho’s State Highway System and a history of the Idaho Transportation Department (ITD) and its predecessor agencies to serve as a basis for evaluating the National Register of Historic places (National Register) eligibility of roads within the Sta ...
  • Confinement Effect of Metal Railing Narrow Baseplates on Adhesive Anchor Breakout Resistance Summary
    Confinement Effect of Metal Railing Narrow Baseplates on Adhesive Anchor Breakout Resistance [Summary]
    Suksawang, Nakin
    2019-12-01 | PDF
    Florida Institute of Technology researchers examined the confinement effect of a narrow baseplate on adhesive anchor breakout resistance and developed a new confinement modification factor.
  • Evaluating PostWildfire Flood Impacts on Transportation Infrastructure for Mitigation Planning
    Evaluating Post-Wildfire Flood Impacts on Transportation Infrastructure for Mitigation Planning
    Valentin, Vanessa ;
    Stormont, John
    2019-11-30 | PDF
    Wildfires have seen a sharp increase in severity and frequency due to changes in climate, especially in the Southwestern U.S., where prevailing conditions of arid climate such as heat waves and droughts can have a dramatic effect on the risk of fire. This study investigated the impacts of post-wildfire floods on transportation infrastructure. Drain ...
  • Implementation of SPF Methods To Identify High Collision Concentration Locations
    Implementation of SPF Methods To Identify High Collision Concentration Locations
    Vayalamkuzhi, Praveen ;
    Medury, Aditya
    2019-11-30 | PDF
    The California Department of Transportation (Caltrans) ranks transportation safety as a top priority to save lives by improving safety throughout the State Highway System (SHS). Caltrans is establishing a unique role as a leader in state-specific highway safety improvements and capacity building at the national level. To effectively manage transpor ...
  • Safety Evaluation of Statewide OffHighway Vehicle Use in Alaska Crash Review On and Offroad System Use and Conflict Evaluation
    Safety Evaluation of Statewide Off-Highway Vehicle Use in Alaska: Crash Review, On- and Off-road System Use, and Conflict Evaluation
    Belz, Nathan P.
    2019-11-28 | PDF
    The research presented here had four primary objectives. First, to document existing state of practice and policies in the State of Alaska regarding OHV use on roads and in public rights of way. Second, to characterize and identify the spatial distribution of OHV crashes and injuries using DMV crash records and the AKTR. Third, conduct a media disc ...
  • Bridge Structural Inspections Using Bridge Information Models BrIM and Unmanned Aerial Vehicles UAVs
    Bridge Structural Inspections Using Bridge Information Models (BrIM) and Unmanned Aerial Vehicles (UAVs)
    Turkan, Yelda
    ORCID ICON IMG
    2019-11-27 | PDF
    Bridge inspection is a critical task needed to monitor bridge quality and serviceability. In the U.S., 40 percent of bridges are more than 50 years old, while most bridges are typically designed for a lifespan of 50 years. Of the 614,387 bridges across the U.S., 9.1 percent are considered structurally deficient. These statistics reported in the lit ...
  • Develop Statistical Models Quantifying the Relationship Between Pavement Surface Friction Characteristics and Traffic Accident Rates
    Develop Statistical Models Quantifying the Relationship Between Pavement Surface Friction Characteristics and Traffic Accident Rates
    Lee, Hyung Suk ;
    Hall, Jim W.
    2019-11-27 | PDF
    The objectives of this research project are to (1) quantify the relationship between pavement surface friction characteristics, traffic accident rates, and any other factor(s) deemed important and (2) determine and recommend critical threshold levels below which crash rates would significantly increase. Following a literature review and gap analysi ...
  • Big Data Visualization and Spatiotemporal Modeling of Risky Driving [supporting dataset]
    Jahangiri, Arash ;
    Machiani, Sahar Ghanipoor
    2019-11-19 | ZIP
    Project Description: The study goal was to identify risky driving behavior using data mining methods within a large dataset. The data used in this study was obtained from the SPMD study conducted in Ann Arbor, Michigan. Data Scope: One week of SPMD data was processed to create a data table (each row representing a monitoring period) in csv format. ...
    Dataset Supporting Files
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