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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 2181 - 2200 of 35888 results
  • FDOT Land Use Analysis to Enhance Successful Logistics Activity Center Summary
    FDOT Land Use Analysis to Enhance Successful Logistics Activity Center [Summary]
    Fitzgerald, Rickey ;
    Ozkul, Seckin
    2023-01-01 | PDF
    As the third most populous state in the U.S., Florida has many attractive qualities – sunshine and beaches, no state income tax, and a diversity of tourist attractions from the panhandle to the peninsula. But is Florida missing out on other business opportunities? Florida’s massive population growth brings an emphasis on freight and logistics. The ...
  • Reducing Winter Maintenance Equipment Fuel Consumption Using Advanced Vehicle Data Analytics Report
    Reducing Winter Maintenance Equipment Fuel Consumption Using Advanced Vehicle Data Analytics [Report]
    Northrop, William ;
    Reddy Challa, Dinesh
    2023-01-01 | PDF
    This project analyzes the impact that idling and snowfall have on the fuel consumed by Minnesota Department of Transportation (MnDOT)’s snowplow fleet, with the underlying objective to determine and advise MnDOT on ways to reduce fuel usage of the fleet using vehicle telematics data. This is a significant problem to solve as fuel use reduction cont ...
  • Reducing Winter Maintenance Equipment Fuel Consumption Using Advanced Vehicle Data Analytics Appendices
    Reducing Winter Maintenance Equipment Fuel Consumption Using Advanced Vehicle Data Analytics: Appendices
    Northrop, William ;
    Reddy Challa, Dinesh
    2023-01-01 | PDF
    This project analyzes the impact that idling and snowfall have on the fuel consumed by MnDOT’s snowplow fleet, with the underlying objective to determine and advise MnDOT on ways to reduce fuel usage of the fleet using vehicle telematics data. This is a significant problem to solve as fuel use reduction contributes to MnDOT’s sustainability goals o ...
  • Using Advanced Data Analytics to Reduce Snowplow Fuel Consumption Technical Summary
    Using Advanced Data Analytics to Reduce Snowplow Fuel Consumption [Technical Summary]
    Huneke, Joseph (Joe) ;
    Northrop, Will
    2023-01-01 | PDF
    Snowplows use substantial amounts of fuel to keep Minnesota’s winter roads safe and accessible. MnDOT spends over $2 million on diesel fuel annually for plowing operations. Reducing vehicle fuel consumption, in addition to cost savings, would help MnDOT meet its sustainability goal to achieve a 30% reduction in greenhouse gases (GHG) from 2005 leve ...
  • Seat Belt Use in 2022 Overall Results Traffic Safety Facts
    Seat Belt Use in 2022 – Overall Results [Traffic Safety Facts]
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2023-01-01 | PDF
    This research note examines seat belt use in 2022. The national estimate of seat belt use by adult front-seat passengers in 2022 was 91.6 percent, a record high although not statistically different (at the 0.05 level) from 90.4 percent observed in 2021. The seat belt use rate estimate represents the percentage of occupants who are belted during an ...
  • Investigation into the Contributing Factors to the Corrosion of Steel Reinforced Concrete Structures at Elevations Greater than 12 Feet above the Mean HighWater Line
    Investigation into the Contributing Factors to the Corrosion of Steel Reinforced Concrete Structures at Elevations Greater than 12 Feet above the Mean High-Water Line
    Presuel–Moreno, Francisco J ;
    Santillan, Ingrid
    2023-01-01 | PDF
    The main objective of this project was to gain a better understanding and insight as to why corrosion takes place at elevations higher than 12 feet above the mean high-water line (>MHWL+12) for tall components that are part of the substructure (piles, columns, footers) of bridges that are partially immersed. There are several factors that influence ...
  • Optimizing Maintenance Equipment Tracking
    Optimizing Maintenance Equipment Tracking
    Nazzal, Munir D ;
    Manasreh, Dmitry
    2023-01-01 | PDF
    This report summarizes the results of a project that was completed to develop a system to allow multiple ODOT users with different administrative authority to locate and schedule different types of equipment in ODOT district and county garages. The project was divided into two phases. The results of Phase 1 indicated that the optimum tracking syste ...
  • Optimizing Maintenance Equipment Tracking Fact Sheet
    Optimizing Maintenance Equipment Tracking [Fact Sheet]
    Nazzal, Munir D
    2023-01-01 | PDF
    This report summarizes the results of a project that was completed to develop a system to allow multiple ODOT users with different administrative authority to locate and schedule different types of equipment in ODOT district and county garages. The project was divided into two phases. The results of Phase 1 indicated that the optimum tracking syste ...
  • Assessing the Effects of Chloride Deicer Applications on Groundwater near the Siskiyou Pass Southwestern Oregon July 2018February 2021
    Assessing the Effects of Chloride Deicer Applications on Groundwater near the Siskiyou Pass, Southwestern Oregon, July 2018–February 2021
    Gingerich, Stephen B. ;
    Wise, Daniel R
    2023-01-01 | PDF
    The U.S. Geological Survey, in cooperation with the Oregon Department of Transportation (ODOT), evaluated the effects of cold-weather chloride deicers (road deicing chemicals) on groundwater quality, with a focus on chloride, near the Siskiyou Pass in southwestern Oregon. The study covered the period during July 2018 through February 2021. Between ...
  • Guidelines for Evaluating Safety Using Traffic Encounters Proactive Crash Estimation on Roadways with Conventional and Autonomous Vehicle Scenarios
    Guidelines for Evaluating Safety Using Traffic Encounters: Proactive Crash Estimation on Roadways with Conventional and Autonomous Vehicle Scenarios
    Tarko, Andrew P. ;
    Romero, Mario A.
    2023-01-01 | PDF
    With the expected arrival of autonomous vehicles, and the ever-increasing levels of automation in today’s human driven vehicles, road safety is changing at a rapid pace. This project aimed to address the need for an efficient and rapid method of safety evaluation and countermeasure identification via traffic encounters, specifically traffic conflic ...
  • Defining Operational Design Domains for the Safe Blending of CAVs in the Traffic Stream Project 07033 Video
    Defining Operational Design Domains for the Safe Blending of CAVs in the Traffic Stream: Project 0-7033 [Video]
    Martin, David ;
    West, Kelly D
    2023-01-01 | MPEG
    "The Center for Transportation Research at the University of Texas-Austin recently completed a project that compared automated vehicle performance and human driving behavior in several virtual highway and urban environment scenarios. The research team then analyzed the safety, mobility, and human-factors results to draw conclusions and formulate te ...
    Supporting Files
  • Examining Data Needs and Implementation Process of AVBased Microtransit Service A Case Study in Lake Nona
    Examining Data Needs and Implementation Process of AV-Based Microtransit Service: A Case Study in Lake Nona
    Peng, Zhong-Ren ;
    Liu, Yanghe
    2023-01-01 | PDF
    The development of Autonomous vehicles (AVs) has brought many opportunities but implementing AV-based public transportation services has numerous unforeseen issues. One primary research gap is that existing studies on AV transit systems consist of predictions and speculation without actual cases and data support. Another issue is that a measurement ...
  • RealTime Truck Parking Information Integration Visualization and Prediction
    Real-Time Truck Parking Information Integration, Visualization, and Prediction
    Wang, Yanhai ;
    Yang, Hao
    2023-01-01 | PDF
    The trucking industry plays a critical role in freight transportation in the United States. One major problem commonly recognized across the country is inadequate truck parking supply because existing truck parking facilities are struggling to meet the demand of increasing numbers of trucks on the road. Lack of parking spaces and real-time parking ...
  • Synthesis Study on Employing Snowplow Driving Simulators in Training
    Synthesis Study on Employing Snowplow Driving Simulators in Training
    Debs, Luciana ;
    Zheng, Yanchao
    2023-01-01 | PDF
    Departments of Transportation (DOTs) need to mobilize workers under harsh weather conditions for winter operations. Traditional snowplow driver training at INDOT is usually conducted annually before the snow season; therefore, it does not replicate the conditions which drivers will be exposed to during winter operations. To this point, some state D ...
  • 21 Roadway Design Guidance Update
    2+1 Roadway Design Guidance Update
    Jasper, Jeff ;
    Wolfe, Jeff
    2023-01-01 | PDF
    The frequency and severity of crashes on rural two-lane roadways have increased in the US relative to other road types. This trend can be explained by the growing number of vehicles, higher speeds, narrow shoulders, and vehicle mixes. One solution for improving traffic flow and safety outcomes on rural two-lane roadways is to adopt a 2+1 design, wh ...
  • Approaches for Assessing Flows Concentrations and Loads of Highway and Urban Runoff and ReceivingStream Stormwater in Southern New England With the Stochastic Empirical Loading and Dilution Model SELDM
    Approaches for Assessing Flows, Concentrations, and Loads of Highway and Urban Runoff and Receiving-Stream Stormwater in Southern New England With the Stochastic Empirical Loading and Dilution Model (SELDM)
    Granato, Gregory E. ;
    Spaetzel, Alana B
    2023-01-01 | PDF
    The Stochastic Empirical Loading and Dilution Model (SELDM) was designed to help quantify the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks. SELDM is calibrated using representative hydrological and water-quality ...
  • The Policy and Politics of Highway Expansions
    The Policy and Politics of Highway Expansions
    Lee, Amy Elisabeth
    2023-01-01 | PDF
    This mixed-methods dissertation explores questions related to the governance landscape and the institutional and political factors that surround highway expansion projects. Highways and highway building are a central contributor to a myriad of environmental and social problems, ranging from local air pollution to global climate change to displaceme ...
  • An Evaluation of GPR Monitoring Methods on Varying River Ice Conditions A Case Study in Alaska
    An Evaluation of GPR Monitoring Methods on Varying River Ice Conditions: A Case Study in Alaska
    Richards, Elizabeth ;
    Stuefer, Svetlana
    2023-01-01 | PDF
    Ice roads and bridges across rivers, estuaries, and lakes are common transportation routes during winter in regions of the circumpolar north. Ice thickness, hydraulic hazards, climate variability and associated warmer air temperatures have always raised safety concerns and uncertainty among those who travel floating ice road routes. One way to addr ...
  • Assessing Sustainability of ECommerce Goods Distribution
    Assessing Sustainability of E-Commerce Goods Distribution
    Pahwa, Anmol
    ORCID ICON IMG
    2023-01-01 | PDF
    The growth of e-commerce, spurred by the internet, has transformed urban goods flow. What would previously have been a trip to a store is now a hassle-free delivery to the home. With consolidated and optimized delivery tours, e-commerce has the potential to make urban goods flow economically viable, environmentally efficient, and socially equitable ...
  • Graduated Driver Licensing Program
    Graduated Driver Licensing Program
    Koo, Jeeyen ;
    Martin, Andrew
    2023-01-01 | PDF
    To address challenges related to teen driver safety, Kentucky adopted a simple graduated driver licensing (GDL) program in 1996 and further expanded it in 2006 by adding an intermediate licensing phase, requirements for supervised practice driving, and instituting restrictions on passenger age. Despite GDL programs having been adopted throughout th ...
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