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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 2641 - 2660 of 36114 results
  • Assessing Eretailers Resilience During the COVID19 Pandemic
    Assessing E-retailer’s Resilience During the COVID-19 Pandemic
    Jaller, Miguel ;
    Pahwa, Anmol
    2022-07-01 | PDF
    The COVID-19 pandemic led to a significant breakdown of the traditional retail sector, resulting in a substantial surge in ecommerce demand for the delivery of essential goods. The e-retailers coped with this surge in demand, albeit while operating at a much lower level of service than usual, by outsourcing part of their operations through: crowdso ...
  • Analyzing the Use and Impacts of Oakland Slow Streets and Potential Scalability Beyond Covid19
    Analyzing the Use and Impacts of Oakland Slow Streets and Potential Scalability Beyond Covid-19
    Douglas, Gordon ;
    Moore, David
    2022-07-01 | PDF
    This report presents the results of a mixed-methods study of the 2020-2022 Oakland Slow Streets program. An official response to the Covid-19 pandemic, the program used signs and temporary barricades to limit thru-traffic on 21 miles of city streets to create more and safer space for walking, cycling, and outdoor recreation. Researchers collected d ...
  • Sustainability Plan July 2022
    Sustainability Plan: July 2022
    United States. Department of Transportation. Office of the Secretary of Transportation
    2022-07-01 | PDF
    Executive Order (E.O.) 14057 details the President’s bold and ambitious vision for the federal government — using a whole of government approach and the power of procurement to achieve net-zero emissions economy-wide by 2050. Critical goals include transitioning to zero emission vehicles (ZEVs) and energy efficient, net-zero emissions buildings, bo ...
  • Forecasting Freight Logistic Needs and INDOT Plans
    Forecasting Freight Logistic Needs and INDOT Plans
    Iyer, Ananth V ;
    Brady, Tom
    2022-07-01 | PDF
    This project focused on forecasting freight logistics needs and developing and analyzing capacity plans for the Indiana Department of Transportation (INDOT) to consider. The forecast timeframe ranges from the 2020 to 2045; the commodities considered are those used in the Federal Highway Administration (FHWA) framework. The authors considered five S ...
  • Environmental Impacts of Potassium Acetate as a Road Salt Alternative University of Minnesota
    Environmental Impacts of Potassium Acetate as a Road Salt Alternative (University of Minnesota)
    Gulliver, John S. ;
    Chun, Chan Lan
    2022-07-01 | PDF
    Road salt (NaCl) is used predominantly across the state for winter road anti-icing (as brine) and de-icing (as a solid) operations. Road salt is used because it is inexpensive and effective, but the thousands of tons used annually have resulted in increasing chloride concentrations of surface water bodies throughout Minnesota. In many cases, chlori ...
  • Traffic Safety Facts 2020 Data RuralUrban Comparison of Motor Vehicle Traffic Fatalities
    Traffic Safety Facts 2020 Data: Rural/Urban Comparison of Motor Vehicle Traffic Fatalities
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2022-07-01 | PDF
    In 2020, there were 15,033 (42%) fatal traffic crashes in rural areas resulting in 16,665 (43%) traffic fatalities. There were 20,233 (57%) fatal traffic crashes in urban areas resulting in 21,650 (56%) traffic fatalities. Fatalities in rural areas increased by 2 percent from 16,288 in 2019 to 16,665 in 2020, and in urban areas increased by 9 perce ...
  • Domestic Airline Fares Consumer Report First Quarter 2022 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: First Quarter 2022 Passenger and Fare Information
    United States. Department of Transportation
    2022-07-01 | 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 ...
  • Phase II Investigation and Guidelines for Best Practices of Mass Concrete Construction Management
    Phase II – Investigation and Guidelines for Best Practices of Mass Concrete Construction Management
    Cho, Yong Kwon ;
    Gentry, Russell
    2022-07-01 | PDF
    The objective of this research is to improve and validate the mass concrete thermal management methods (e.g., passive or active cooling) and decision-making tools developed from the Phase I research (Investigation and Guidelines for Mass Concrete Construction Management) against the Georgia Department of Transportation’s (GDOT’s) real-world mass co ...
  • Analysis of Using V2X DSRCEquipped Snowplows To Request Signal Preemption
    Analysis of Using V2X DSRC-Equipped Snowplows To Request Signal Preemption
    Schultz, Grant G. ;
    Lau, Samantha K
    2022-07-01 | PDF
    For the 2019-2020 winter season, vehicle-to-everything (V2X) systems using dedicated short-range communications (DSRC) were placed on Utah Department of Transportation (UDOT) snowplows and state routes to test the effectiveness of snowplows requesting signal preemption from traffic controllers. This study was done to understand the impacts and bene ...
  • Final Report Developing Scalable Models for Safety Insights and Improvements Using EScooter Exposure Data
    Final Report: Developing Scalable Models for Safety Insights and Improvements Using E-Scooter Exposure Data
    Clewlow, Regina ;
    Foti, Fletcher
    2022-07-01 | PDF
    The U.S. Department of Transportation (DOT) is leading a Safety Data Initiative (SDI), to enhance the analysis and visualization that informs safety policy decisions. Populus was selected to perform analysis and assess the quality of leveraging GPS trip trace data from micromobility operators such as Lime, Bird, and Superpedestrian (LINK), to serve ...
  • Balanced Asphalt Concrete Mix Performance in Utah Phase VI MultiLaboratory Testing of IdealCT
    Balanced Asphalt Concrete Mix Performance in Utah, Phase VI: Multi-Laboratory Testing of Ideal-CT
    Romero, Pedro ;
    VanFrank, Kevin
    2022-07-01 | PDF
    This report describes the research efforts aimed at determining the repeatability of the IDEAL-CT test for asphalt concrete mixtures. It follows a series of studies investigating different cracking tests. Three mixes in common production in the northern part of Utah were investigated by three different labs experienced in performance testing. Withi ...
  • Financial Achievability Model FAM Operationalization Case Studies and Analysis
    Financial Achievability Model (FAM): Operationalization Case Studies and Analysis
    Schriefer, Patricia (Born)
    2022-07-01 | PDF
    In a prior research project (BDK83 977-24), the Financial Achievability Model (FAM) was created for the Florida Department of Transportation Research Center. The Research Center can use the FAM in all phases of research to meet strategic objectives, including demonstrating the potential benefits of proposed projects, allowing for a more cost-effect ...
  • Probabilistic Wind Speed Model for Local Data in All Kansas Counties
    Probabilistic Wind Speed Model for Local Data in All Kansas Counties
    Al Shboul, Khalid W ;
    Rasheed, Hayder A.
    2022-07-01 | PDF
    This study developed a spatial interpolation technique using finite element shape functions to derive wind speed records for all unsampled Kansas counties from data recorded at 17 city locations in and near Kansas. A computational method using the Kaimal spectrum is presented for generating artificial time histories of wind speeds. This is done to ...
  • Regional Optimization of Roadside Turfgrass Seed Mixtures Phase 2 Regional Field Trials and Economic Analysis
    Regional Optimization of Roadside Turfgrass Seed Mixtures Phase 2: Regional Field Trials and Economic Analysis
    Watkins, Eric ;
    Christensen, Dominic
    2022-07-01 | PDF
    Our goal was to develop seed mixture recommendations to improve establishment and development of roadside vegetation in Minnesota. We selected 14 research sites across Minnesota and seeded 40 turfgrass mixtures. Turfgrass coverage was assessed at each site twice a year and the weed seed bank was examined. We found that greater seeded turfgrass spec ...
  • Guidelines for Portable WeightinMotion Wim System Installation and Traffic Data Analysis
    Guidelines for Portable Weight-in-Motion (Wim) System Installation and Traffic Data Analysis
    Prakoso, Adrianus ;
    Chunduri, Harshavardhan Rao
    2022-07-01 | PDF
    As the portable weight-in-motion (WIM) technology has been successfully explored and practically used to collect site-specific traffic data in Texas Department of Transportation Research Project 0-6940 Develop System to Render Mechanistic-Empirical Traffic Data for Pavement Design, this standardized guideline was developed to aid users understand m ...
  • Environmental Impacts of Potassium Acetate as a Road Salt Alternative Iowa State University Evaluation
    Environmental Impacts of Potassium Acetate as a Road Salt Alternative (Iowa State University Evaluation)
    Rehmann, Chris ;
    Ikuma, Kaoru
    2022-07-01 | PDF
    The goal of this research project was to determine the environmental impact of potassium acetate (KAc) as a deicer, including its effects on water quality and the resulting toxicity to biota. The motivation for the research was the Minnesota Department of Transportation’s (MnDOT’s) exploratory use of KAc to significantly reduce the use of chloride- ...
  • NJDOT Highway Safety Improvement Program Implementation Plan Brief
    NJDOT Highway Safety Improvement Program Implementation Plan [Brief]
    Hopwood, Cory ;
    Glodek, Jack
    2022-07-01 | PDF
    The New Jersey Department of Transportation (NJDOT) engaged Cambridge Systematics (CS) to assist with the development the Highway Safety Improvement Program (HSIP) Implementation Plan that will be used to improve the safety of New Jersey roads and ensure the state meets federal performance targets in the coming years.
  • Forecasting Freight Logistic Needs and INDOT Plans
    Forecasting Freight Logistic Needs and INDOT Plans
    Iyer, Ananth V ;
    Brady, Tom
    2022-07-01 | PDF
    This project focused on forecasting freight logistics needs and developing and analyzing capacity plans for INDOT to consider. The forecast timeframe ranges from the 2020 to 2045; the commodities considered are those used in the FHWA framework. We considered five SSP (Shared Socio-Economic Pathways) scenarios that are in sync with those used by the ...
  • Quick Facts 2020
    Quick Facts 2020
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2022-07-01 | National Transportation Statistics (NTS) | PDF
    In 2010, there were 32,999 people killed, 3.9 million were injured, and 24 million vehicles were damaged in motor vehicle crashes in the United States. The economic costs of these crashes totaled $242 billion. Included in these losses are lost productivity, medical costs, legal and court costs, emergency service costs (EMS), insurance administratio ...
  • Creating Safer Communities for the Use of Active Transportation Modes in California The Development of Effective Communication Message Strategy for Vulnerable Road Users
    Creating Safer Communities for the Use of Active Transportation Modes in California: The Development of Effective Communication Message Strategy for Vulnerable Road Users
    Sarofim, Samer ;
    Tawfik, Aly
    2022-07-01 | PDF
    Despite increased efforts to improve safety in recent years (e.g., the Focus Cities Program in California), California continues to have a high rate of pedestrian and bicyclist fatalities. Currently, the state currently lacks a cohesive messaging strategy to improve behaviors related to pedestrian and cyclist traffic safety practices. To fulfill th ...
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