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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 1601 - 1620 of 35865 results
  • GeoStatistical Deep Foundation Software Summary
    Geo-Statistical Deep Foundation Software [Summary]
    Herrera, Rodrigo ;
    Davidson, Michael
    2023-09-01 | PDF
    The objectives of this project were twofold: 1) to update GeoStat—the current geotechnical design software used by FDOT—to include site-specific considerations and 2) to hold demonstration sessions on using the updated software for in-house personnel as well as consultants.
  • Performance Metric for Highway Avalanche Corridors
    Performance Metric for Highway Avalanche Corridors
    Gauthier, Dave ;
    Sala, Zac
    2023-09-01 | PDF
    A research project was initiated on behalf of the Colorado Department of Transportation (CDOT) and Transportation Avalanche Research Pool (TARP) to develop a metric for measuring the performance of highway avalanche management programs. The metric is meant to support resource allocation and other management decisions made by avalanche programs whil ...
  • Fargo Moorhead 2021 Travel Demand Model Update
    Fargo Moorhead 2021 Travel Demand Model Update
    Motuba, Diomo ;
    Faisal, Habib Muhammad
    2023-09-01 | PDF
    The Fargo Moorhead MPO’s (The F-M MPO) Travel Demand Model (TDM) is updated every five years to replicate new data and the advancements in state-of-the-art transportation modeling methods and techniques. The original timeline for the current model was set for 2020. However, due to COVID-19, travel patterns changed because of travel restrictions and ...
  • US Department of Transportation Equity Action Plan 2023 Update
    U.S. Department of Transportation Equity Action Plan 2023 Update
    United States. Department of Transportation
    2023-09-01 | PDF
    DOT is committed to pursuing a comprehensive approach to advancing equity for all. The first DOT Equity Action Plan, in response to Executive Order 13985, was finalized in January 2022 as a major milestone for the Department that represented a shift in how the agency exercises its existing authorities and delivers transportation programs. Executive ...
  • Traffic Safety Facts 2021 Data 2021 State Traffic Data
    Traffic Safety Facts 2021 Data: 2021 State Traffic Data
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2023-09-01 | PDF
    Traffic fatalities in the United States increased by 10 percent from 2020 to 2021 (39,007 to 42,939). The fatality rate per 100 million vehicle miles traveled (VMT) was 1.37 in 2021, ranging from a high of 2.08 to a low of 0.71 among States. The rate of traffic fatalities per 100 million VMT in the United States increased by 2 percent (1.34 to 1.37 ...
  • Guidelines for Optimizing Roadway CrossSection on Texas Highways
    Guidelines for Optimizing Roadway Cross-Section on Texas Highways
    Brewer, Marcus A. ;
    Geedipally, Srinivas
    2023-09-01 | PDF
    This project compiled and reviewed existing road cross-section guidance (for urban, suburban, and rural environments) from across the United States, along with research findings, to identify content that would be appropriate for inclusion in Texas-based guidelines for road cross-section optimization. A separate project task focused on considering t ...
  • DDOT Pilot Framework
    DDOT Pilot Framework
    Ricks, Karina ;
    Bridgford, Camron
    2023-09-01 | PDF
    The District Department of Transportation (DDOT) has a long history of supporting innovative pilot projects in service of its mission of enhancing transportation efficiency, safety, and sustainability. Pilot projects are a means to explore innovative ideas, strategies, and technologies on a limited scale before full-scale implementation. They allow ...
  • Snowplow Route Optimization for the Kansas Roadway System
    Snowplow Route Optimization for the Kansas Roadway System
    Tran, Dan ;
    Nguyen, Phuong
    2023-09-01 | PDF
    State departments of transportation (DOTs) spend substantial resources on snow and ice control activities and operations each year. The Kansas DOT (KDOT) spends from $7 million to $22 million annually. KDOT winter maintenance operations currently deploy a fleet of 591 snowplow trucks, including 1,182 drivers and approximately 200 engineering techni ...
  • Snowplow Route Optimization for the Kansas Roadway System Technical Summary
    Snowplow Route Optimization for the Kansas Roadway System [Technical Summary]
    Tran, Dan ;
    Nguyen, Phuong
    2023-09-01 | PDF
    The objective of this project was to develop a snowplow truck route optimization plan for one district (District 4) to help KDOT enhance snow removal efficiency by justifying the fleet size and efficiently allocating limited resources while maintaining roadway safety and reliability.
  • Update the Pile Design by CPT Software to Incorporate Newly Developed PileCPT Methods and Other Design Features
    Update the Pile Design by CPT Software to Incorporate Newly Developed Pile-CPT Methods and Other Design Features
    Abu-Farsakh, Murad ;
    Amirmojahedi, Mohsen
    2023-09-01 | PDF
    This study presents the performance evaluation of 21 direct pile-CPT methods for estimating the ultimate load carrying capacity of square precast prestressed concrete (PPC) piles driven into Louisiana soils utilizing the cone penetration test (CPT) data. The investigated methods are: Schmertmann, De Ruiter and Beringen, Bustamante and Gianeselli (L ...
  • Analysis of Benefits of UDOTs Expanded Incident Management Team Program
    Analysis of Benefits of UDOT’s Expanded Incident Management Team Program
    Schultz, Grant G. ;
    Hyer, Joel
    2023-09-01 | PDF
    In 2019, the Utah Department of Transportation (UDOT) funded a research study evaluating the performance measures of UDOT’s expanded Incident Management Team (IMT) program. The number of IMTs patrolling Utah roadways increased from 13 to 25 between 2018 and 2020. Crash data were collected from the Utah Highway Patrol’s Computer Aided Dispatch datab ...
  • Impact of Urban Speed Limit Changes on Driving Speeds Technical Summary
    Impact of Urban Speed Limit Changes on Driving Speeds [Technical Summary]
    Davis, Gary A. ;
    Lund, Victor
    2023-09-01 | PDF
    Speed limits are a popular safety measure used in urban areas. A new analysis that monitored driving speeds before and after posted changes to speed limits reveals lower speed limits may not, at least initially, cause drivers to slow down.
  • Using SeverityWeighted Risk Scores To Prioritize Safety Funding in Utah
    Using Severity-Weighted Risk Scores To Prioritize Safety Funding in Utah
    Schultz, Grant G. ;
    Aristizabal, Tomas Barriga
    2023-09-01 | PDF
    Budgets for transportation improvements are limited so it is important for governments to focus on improving locations most in need of safety funding. The objective of the Two-Output Model for Safety (TOMS) is to provide the Utah Department of Transportation (UDOT) with a reliable method to prioritize safety improvements on state-owned roadways amo ...
  • Estimating PeakFlow Quantiles for Selected Annual Exceedance Probabilities in Illinois
    Estimating Peak-Flow Quantiles for Selected Annual Exceedance Probabilities in Illinois
    Over, Thomas M. ;
    Marti, Mackenzie K
    2023-09-01 | PDF
    This report presents the methods, results, and applications of an updated flood-frequency study for the State of Illinois. This study, which uses data through September 2017, updates two previous studies that used data through 1999 and 2009, respectively. Flood-frequency estimates are used for a variety of land-use planning and infrastructure desig ...
  • Evaluating Michigans Ferry Services Funding and Policies to Support Island Access Research Spotlight
    Evaluating Michigan’s Ferry Services, Funding and Policies to Support Island Access [Research Spotlight]
    Zockaie, Ali ;
    Shultz, Valerie
    2023-09-01 | PDF
    The Michigan Department of Transportation (MDOT) oversees ferry service for Michigan’s islands as part of its mission to provide safe and equitable access to state residents. To identify ways to improve service to island residents now and in the future, MDOT sought a more comprehensive understanding of the critical aspects of ferry service. This re ...
  • An Evaluation of Wildlife Crossing Design Placement Costs and Funding Opportunities for Corridor Q
    An Evaluation of Wildlife Crossing Design, Placement, Costs, and Funding Opportunities for Corridor Q
    Donaldson, Bridget M ;
    Hillard, Elizabeth M
    2023-09-01 | PDF
    Construction is underway along Corridor Q, a 14-mile section of highway in Southwest Virginia that will open to traffic in stages from 2023 to 2027. Preliminary data indicated that a newly established reintroduced herd of elk regularly travels on and alongside the partially constructed road. The purpose of this study was to determine potential desi ...
  • Inspection Training Course on Bridge Preventive Maintenance Activities
    Inspection Training Course on Bridge Preventive Maintenance Activities
    Wells, Danny ;
    Palle, Sudhir
    2023-09-01 | PDF
    Despite over 30 percent of bridges in the United States having exceeded their 50-year design lives, most state departments of transportation (DOTs) lack the funding needed to replace bridges on a large scale. In response, agencies have increasingly turned to bridge preventive maintenance activities to prolong bridge service lives. These activities ...
  • Connected and Automated Future of Transportation for Kansas
    Connected and Automated Future of Transportation for Kansas
    Aziz, H.M. Abdul ;
    Islam, A.M. Hasibul
    2023-09-01 | PDF
    The connected and automated vehicle (CAV) technologies will bring unprecedented changes in the landscape of transportation systems for areas like operations, management, and infrastructure needs. To assure a safe, reliable, and trustworthy connected and automated transportation system, it is important to have a clear CAV implementation pathway that ...
  • Connected and Automated Future of Transportation for Kansas Technical Summary
    Connected and Automated Future of Transportation for Kansas [Technical Summary]
    Aziz, H.M. Abdul ;
    Islam, A.M. Hasibul
    2023-09-01 | PDF
    The connected and automated vehicle (CAV) technologies will bring unprecedented changes in the landscape of transportation systems for areas like operations, management, and infrastructure needs. To assure a safe, reliable, and trustworthy connected and automated transportation system, it is important to have a clear CAV implementation pathway that ...
  • STAR InRoad Electric Vehicle Charging for Parked Vehicles
    STAR In-Road Electric Vehicle Charging for Parked Vehicles
    Abdulhamed, Bilal ;
    Alavizadeh, Hootan
    2023-09-01 | PDF
    This report documents the work conducted as a multi-disciplinary project on the wireless charging of parked Electrical Vehicles (EVs) by Wright State University and supported by the Ohio Department of Transportation (ODOT). This document summarizes our progress on a wide variety of topics, including 1) in-house software to read and label the open-s ...
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