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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 341 - 360 of 35438 results
  • Truck Parking Shortage Improving Efficiency and Identifying Opportunities Summary
    Truck Parking Shortage: Improving Efficiency and Identifying Opportunities [Summary]
    Stich, Bethany ;
    Rupnow, Tyson
    2025-03-01 | PDF
    In coordination with the American Trucking Association (ATA) and American Transportation Research Institute (ATRI), this project aims to address truck parking issues with short- and long-term solutions. The short-term solution is to identify what truck parking exists, how it is managed, and what and where Variable Message Signage (VMS) exists for t ...
  • Superabsorbent Polymer in Concrete to Improve Durability
    Superabsorbent Polymer in Concrete to Improve Durability
    Zhou, Bo ;
    Taylor, Peter
    2025-03-01 | PDF
    The main objective of this research was to explore the optimized selection of superabsorbent polymer (SAP) products as internal curing materials in concrete and to examine the effects of the use of eight selected SAPs on properties that affect concrete performance, including shrinkage, hydration, permeability, and strength. Experimental results dem ...
  • Ebike Lending Libraries Trends and Practices in The United States
    E-bike Lending Libraries: Trends and Practices in The United States
    MacArthur, John ;
    Miller, Joshua
    2025-03-01 | PDF
    E-bike lending libraries are emerging as a potential tool to promote sustainable transportation, reduce greenhouse gas emissions, and enhance mobility equity across communities in the United States. By offering residents the opportunity to borrow e-bikes for periods ranging from a couple of hours to several months, these programs help address barri ...
  • Strategic Prioritization in Bridge Asset Maintenance through Data Driven LongTerm Asset Valuation with Additional Emphasis on Promoting GDOTs Partnerships with Counties
    Strategic Prioritization in Bridge Asset Maintenance through Data Driven Long-Term Asset Valuation with Additional Emphasis on Promoting GDOT’s Partnerships with Counties
    Geum Chorzepa, Mi ;
    Durham, Stephan A.
    2025-03-01 | PDF
    This study focuses on engaging local bridge owners through interviews and interactions, aiming to assist them in enhancing their bridge management practices, while also developing resources to support them. Key deliverables include multiple resource guides: a Non-NBI Culvert Inspection Guide, a Weather Stressors Guide, and a Supplementary Guide for ...
  • Improved Incident Response through Coordinated Interoperable Communications
    Improved Incident Response through Coordinated, Interoperable Communications
    Moomen, Milhan ;
    Rahman, Ashifur
    2025-03-01 | PDF
    This study aimed to conduct a needs assessment and performance evaluation of Traffic Incident Management (TIM) in Louisiana and identify areas for TIM improvement. The study also aimed to assess interoperability as a solution to communication gaps. The research team achieved this by performing evaluations and assessments of Louisiana’s TIM and comm ...
  • Best Practices for Maintenance of ControlofAccess Fencing
    Best Practices for Maintenance of Control-of-Access Fencing
    Moomen, Milhan ;
    Rahman, Ashifur
    2025-03-01 | PDF
    This report examines the current practices and challenges associated with the maintenance of control-of-access (C-of-A) fencing along highways, with a particular focus on the Louisiana Department of Transportation and Development (DOTD). C-of-A fencing is an essential infrastructure component, designed to enhance the safety, security, and operation ...
  • Best Practices for Maintenance of ControlofAccess Fencing Summary
    Best Practices for Maintenance of Control-of-Access Fencing [Summary]
    Moomen, Milhan ;
    Rahman, Ashifur
    2025-03-01 | PDF
    This report examines the current practices and challenges associated with the maintenance of control-of-access (C-of-A) fencing along highways, with a particular focus on the Louisiana Department of Transportation and Development (DOTD). C-of-A fencing is an essential infrastructure component, designed to enhance the safety, security, and operation ...
  • NonMotorized Count Program and Risk Factors Assessment
    Non-Motorized Count Program and Risk Factors Assessment
    Tien, Iris ;
    Watkins, Kari E.
    2025-03-01 | PDF
    Non-motorized volumes at different locations in a transportation network are important data for understanding safety and travel needs for people who bike and walk. In Georgia, however, there are limited data about non-motorized volumes in transportation systems given, and in general, these modes volumes are difficult to predict due to high variabil ...
  • MultiDimensional Freight and Trade Capacity Analysis a Case Study on BurhanKhunjerab Route in ChinaPakistan Economic Corridor CPEC
    Multi-Dimensional Freight and Trade Capacity Analysis – a Case Study on Burhan-Khunjerab Route in China-Pakistan Economic Corridor (CPEC)
    Adeel, Muhammad ;
    Khurshid, Muhammad Bilal
    2025-03-01 | PDF
    Trade corridors are critical for fostering global economic growth, reducing transportation costs, and enhancing regional connectivity, yet increasing trade volumes have imposed significant demands on these infrastructures. This study focuses on the Burhan-Khunjerab route, a pivotal section of the China-Pakistan Economic Corridor (CPEC), which conne ...
  • Review of the Current Transportation Asset Management Practices in Wyoming
    Review of the Current Transportation Asset Management Practices in Wyoming
    Aleadelat, Waleed ;
    Ksaibati, Khaled
    2025-03-01 | PDF
    WYDOT maintains a vast network consisting of Interstate, NHS and non-NHS roads. The existing infrastructure needs continues maintenance to keep in good condition and safe for users. To achieve this, WYDOT needs a considerable amount of funding every year and anticipates the demand for future maintenance through performance models. This future maint ...
  • Review of the Current Transportation Asset Management Practices in Wyoming Data Management Plan
    Review of the Current Transportation Asset Management Practices in Wyoming [Data Management Plan]
    Aleadelat, Waleed ;
    Ksaibati, Khaled
    2025-03-01 | PDF
    WYDOT maintains a vast network consisting of Interstate, NHS and non-NHS roads. The existing infrastructure needs continues maintenance to keep in good condition and safe for users. To achieve this, WYDOT needs a considerable amount of funding every year and anticipates the demand for future maintenance through performance models. This future maint ...
  • TMA Truck Safety
    TMA Truck Safety
    Edara, Praveen K. ;
    Qing, Zhu
    2025-03-01 | PDF
    This study evaluates the effectiveness of in-vehicle safety countermeasures in reducing injury risk for TMA (Truck-Mounted Attenuator) truck occupants during collisions. With increasing incidents involving TMAs in work zones, understanding the protective impact of advanced safety features has become crucial. A review of historical TMA crash reports ...
  • TMA Truck Safety Research Summary
    TMA Truck Safety [Research Summary]
    Edara, Praveen K.
    ORCID ICON IMG
    2025-03-01 | PDF
    This study evaluates the effectiveness of in-vehicle safety countermeasures in reducing injury risk for TMA (Truck-Mounted Attenuator) truck occupants during collisions. With increasing incidents involving TMAs in work zones, understanding the protective impact of advanced safety features has become crucial. A review of historical TMA crash reports ...
  • Improving and Communicating Speed Management Practices Workshop
    Improving and Communicating Speed Management Practices: Workshop
    Fitzpatrick, Kay ;
    Venglar, Steven P.
    2025-03-01 | PDF
    Posted speed limits (PSLs) are a highly complex issue involving engineering, human factors, and political and societal concerns. On a national level, recent research along with calls to change how speed limit are set, especially for city streets, have generated extensive discussion on future speed limit setting procedures. Recent Texas Department o ...
    Supporting Files
  • Comparison of Compost and Proprietary Soil Amendments for Vegetation Establishment
    Comparison of Compost and Proprietary Soil Amendments for Vegetation Establishment
    Cetin, Bora ;
    Saltali, Oguzhan
    2025-03-01 | PDF
    Post-construction roadside soils often suffer from compaction, low fertility, and poor structure, challenging vegetation establishment and stormwater management. This study evaluates the effectiveness of organic amendments (OAs) and proprietary amendments as alternatives to traditional methods. The study involves greenhouse experiments (pot and mes ...
  • Risk Assessment Tool Associated with Cost
    Risk Assessment Tool (Associated with Cost)
    Shrestha, K. Joseph ;
    Uddin, Mohammad Moin
    2025-03-01 | PDF
    Computing accurate cost estimates during an early phase of project development is a challenging task because of various project factors such as change in project scope, inflation, site conditions, and market conditions. This study collects and analyzes engineers’ estimates throughout the project development to quantify the changes in estimates over ...
  • Improving and Communicating Speed Management Practices Workshop Development
    Improving and Communicating Speed Management Practices: Workshop Development
    Fitzpatrick, Kay ;
    Venglar, Steven P.
    2025-03-01 | PDF
    Posted speed limits (PSLs) are a highly complex issue involving engineering, human factors, and political and societal concerns. On a national level, recent research along with calls to change how speed limit are set, especially for city streets, have generated extensive discussion on future speed limit setting procedures. Recent Texas Department o ...
  • Gravel Road Performance Enhancements
    Gravel Road Performance Enhancements
    Cetin, Bora ;
    Cetin, Kristen
    2025-03-01 | PDF
    Nearly 30% of roads in the U.S. are unpaved, significantly impacting rural connectivity with Nebraska alone having approximately 75% unpaved roads. This study systematically evaluates local materials to improve gravel road performance, reduce maintenance frequency, and decrease financial burdens on counties. Survey responses revealed that nearly 70 ...
  • HalfRound Bearing Stiffeners for Skewed Steel IGirders Brief
    Half-Round Bearing Stiffeners for Skewed Steel I-Girders [Brief]
    Mehrabi, Armin
    ORCID ICON IMG
    2025-03-01 | PDF
    Skewed steel I-girder bridges present unique structural challenges due to their angled geometry, which affects load distribution and increases potential for fatigue and stress concentrations. Traditional connection methods, such as bent plate connections, can introduce flexibility, leading to reduced stability. FDOT is exploring Half-Round Bearing ...
  • Research Summary Increasing Service Reliability by Adding a Dedicated Right of Way for Buses
    Research Summary: Increasing Service Reliability by Adding a Dedicated Right of Way for Buses
    Song, Ying
    2025-03-01 | PDF
    Transit services connect people to jobs and opportunities, fostering vibrant communities and multimodal travel along service corridors. A transit right-of-way (ROW) can help buses bypass congestion and stay on schedule. Many studies have proved that transit ROWs effectively improve service reliability and reduce user costs. However, these studies o ...
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