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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 1361 - 1380 of 35865 results
  • WisDOT Research Program 2024 Annual Report
    WisDOT Research Program: 2024 Annual Report
    Wisconsin. Department of Transportation
    2024-01-01 | PDF
    This is a report of research and technology transfer activities carried out by the Wisconsin Department of Transportation through the Part B research portion of the State Planning and Research Program of the Federal Highway Administration, U.S. Department of Transportation. The report describes activities during Federal Fiscal Year 2024, covering O ...
  • Economic Impact of Access Management Treatments Technical Summary
    Economic Impact of Access Management Treatments [Technical Summary]
    Barnes, Stephen
    2024-01-01 | PDF
    This study’s objective was to determine if access management treatments in Louisiana have an economic impact on roadside businesses. The specific access management treatments observed in this study are J-turns, right-in-right-out entrances, raised medians, raised curb channelization systems, and center turn lanes. The research focused on business s ...
  • Zero Emission Concrete Mixer Trucks Comparison of Battery Electric and Hydrogen Fuel Cell Powertrains
    Zero Emission Concrete Mixer Trucks: Comparison of Battery Electric and Hydrogen Fuel Cell Powertrains
    Gruen, Jonathan
    2024-01-01 | PDF
    This study aims to compare the feasibility of battery electric and hydrogen fuel cell powertrains for concrete mixer trucks to determine which is the better zero-emission powertrain for the industry to transition towards. Duty cycle modeling simulations are used to estimate both the component specifications required to meet the operational requirem ...
  • TimeDiverse DopplerOnly LEO PNT Initial Solution
    Time-Diverse Doppler-Only LEO PNT: Initial Solution
    Moore, Megan O. ;
    Psiaki, Mark L.
    2024-01-01 | PDF
    This paper develops Doppler-based Geometric Dilution of Precision (D-GDOP) analysis for time-diverse Doppler-only positioning and presents an associated batch filter. The former Doppler-only positioning solution requires at least eight satellites to be view simultaneously and discards previous Doppler measurements. In cases where fewer than eight s ...
  • Laboratory and Insitu Characterization of Diatomaceous Soil with Implications for Geotechnical Design
    Laboratory and In-situ Characterization of Diatomaceous Soil with Implications for Geotechnical Design
    Wang, Jiayao, ;
    Evans, T Matthew
    2024-01-01 | PDF
    Diatomaceous soil contains large amounts of fossilized diatoms and is known to have non-textbook, often contradictory, properties: high natural water content, high liquid limit, and high compressibility, but also high shear strength. Diatomaceous deposits intersect existing and potential Oregon Department of Transportation project sites in central, ...
  • Assessment of Pedestrian Safety and Driver Behavior Near an Automated Vehicle
    Assessment of Pedestrian Safety and Driver Behavior Near an Automated Vehicle
    Morris, Nichole L. ;
    Craig, Curtis M.
    2024-01-01 | PDF
    As more automated vehicles enter shared roadways, an essential aspect of automated vehicle (AV) safety is understanding the interactions between these vehicles and other road users. Anecdotal incidents about aggressive following and overtaking behaviors at crosswalks near the Med City Mover (MCM), a low-speed automated shuttle (LSAV) pilot demonstr ...
  • On the Adversarial Robustness of CameraBased 3D Object Detection
    On the Adversarial Robustness of Camera-Based 3D Object Detection
    Xie, Shaoyuan ;
    Li, Zichao
    2024-01-01 | PDF
    In recent years, camera-based 3D object detection has gained widespread attention for its ability to achieve high performance with low computational cost. However, the robustness of these methods to adversarial attacks has not been thoroughly examined, especially when considering their deployment in safety-critical domains like autonomous driving. ...
  • New Brunswick Innovation Hub Smart Mobility Testing Ground
    New Brunswick Innovation Hub Smart Mobility Testing Ground
    Jin, Peter J. ;
    Ge, Yi
    2024-01-01 | PDF
    In this project, the team led by Rutgers University's Center for Advanced Infrastructure and Transportation (CAIT), in collaboration with Iteris, Econsult Solutions, Gannett Fleming, and MBO Engineering, completed the construction and application deployment of the New Brunswick Innovation Hub Smart Mobility Testing Ground (SMTG), now named DataCity ...
  • A Freight Stop Purpose Model Using Enriched GPS Data
    A Freight Stop Purpose Model Using Enriched GPS Data
    Stinson, Monique ;
    Sahin, Olcay
    2024-01-01 | PDF
    Truck tour data are important for understanding freight truck operations and their impacts on the economy, congestion, and sustainability. Tour data capture the movements of trucks as they travel from their depots to make various stops before returning to their depots. Understanding the purpose of these stops (pickup, delivery, rest, etc.) is an es ...
  • TDOT RDS Data Quality Assurance and HighResolution Content Enhancement
    TDOT RDS Data Quality Assurance and High-Resolution Content Enhancement
    Barbour, William ;
    Baroud, Hiba
    2024-01-01 | PDF
    TDOT’s ITS radar detection system, spanning Tennessee’s urban interstates and highways, faced challenges with data quality and reliability, limiting its potential for advanced traffic management and analytics. This research aimed to enhance the system by standardizing configurations, recalibrating sensors, replacing outdated equipment, and implemen ...
  • A Preliminary Cost Estimating Model for Transportation Projects
    A Preliminary Cost Estimating Model for Transportation Projects
    Piratla, Kalyan R. ;
    Le, Tuyen
    2024-01-01 | PDF
    As with any state highway agency (SHA), the construction needs exceed the budget limitations, which mandates that SCDOT prioritizes transportation project needs based on benefit/cost considerations. It is important to use every penny as wisely as possible. In such context, an early-stage cost estimate is imperative for evaluating the feasibility of ...
  • Development of Design Guidance for Smart Work Zone Systems
    Development of Design Guidance for Smart Work Zone Systems
    El-Rayes, Khaled ;
    Ouyang, Yanfeng
    2024-01-01 | PDF
    Smart work zone (SWZ) systems are designed to provide real-time roadway information to better inform motorists, encourage them to take alternate routes, reduce their frustrations, reduce roadway congestion, and enhance safety for motorists and workers. These SWZ systems have been recommended by multiple federal agencies as part of the Intelligent T ...
  • Digitizing Traffic Control Infrastructure for Autonomous Vehicles AV Technical Report
    Digitizing Traffic Control Infrastructure for Autonomous Vehicles (AV): Technical Report
    Wu, Jason (Dayong) ;
    Miller, Matthew
    2024-01-01 | PDF
    High precision road maps are a crucial component to facilitating autonomous driving techniques. Although current Autonomous vehicles (AVs) rely on vehicular sensing techniques (e.g., camera, light detection and ranging [LiDAR], radar), studies have suggested that creating high-quality road maps with traffic control infrastructures (TCIs) (e.g., tra ...
  • Review of Indiana Asphalt Binders InSitu PG Grade Asphalt Determination
    Review of Indiana Asphalt Binders (In-Situ PG Grade Asphalt Determination)
    Lee, Jusang M ;
    Pouranian, M Reza
    2024-01-01 | PDF
    In the face of multifaceted challenges, such as asphalt pavement deterioration and the introduction of new LTPPBind versions, the Indiana Department of Transportation (INDOT) initiated a pivotal research project focusing on three primary areas. First, the study examined the implications of Performance Grade (PG) binder selections on pavement perfor ...
  • Transportation Benefits and Costs of Reducing Lane Widths on Urban and Rural Arterials
    Transportation Benefits and Costs of Reducing Lane Widths on Urban and Rural Arterials
    Ewing, Reid ;
    Promy, Noshin Siara
    2024-01-01 | PDF
    Reducing the lane width of urban arterials provides space for different street features, whereas selecting the appropriate lane width considering road safety is a concern. The major elements of this research are: a comprehensive literature review investigating the effects narrower travel lanes and other geometric designs have on speed, safety, and ...
  • Understanding Aggressive Driving and Ways to Reduce It Phase 1
    Understanding Aggressive Driving and Ways to Reduce It – Phase 1
    Finley, Kari ;
    Hanson, Bridget
    2024-01-01 | PDF
    How aggressive driving is defined, what factors precipitate such behavior, and what strategies effectively prevent and reduce the incidence of aggressive driving behavior are not widely understood. The proposed research sought to address these gaps through a two-phase project. The purpose of this project was to support work in Phase 1. A literature ...
  • Tort Liability for TxDOT from CAV Technologies
    Tort Liability for TxDOT from C/AV Technologies
    Blewett, Becky ;
    Barham, Misty
    2024-01-01 | PDF
    Connected and autonomous vehicles (C/AV) present the opportunity for momentous and positive changes to most aspects of modern life. When described, the impact to mobility is imagined as safer and more efficient. This comes from the chance to build a self-driving and connected network of vehicles, infrastructure, and supporting data exchanges.... As ...
  • Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence Research Project Capsule 244SS
    Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence: Research Project Capsule [24–4SS]
    Moomen, Milhan ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The primary objectives of this research are to: • Assess the feasibility and accuracy of using computer vision technology for performance evaluation at signalized intersections. • Provide intersection video footage data captured by drones. • Use computer vision and artificial intelligence to automatically convert data from video recordings at selec ...
  • Thermal Segregation Influence on Current Asphalt Mixtures
    Thermal Segregation Influence on Current Asphalt Mixtures
    Sebesta, Stephen ;
    Kim, Jinho
    2024-01-01 | PDF
    Thermal segregation during the construction of asphalt mixtures can result in the formation of low-density areas and a subsequent decrease in pavement life. Although the methods for measuring thermal segregation have remained largely unchanged, significant advancements have been made in asphalt mixture types and design methods over the past decade. ...
  • Evaluation of WrongWay Driving Detection Technologies
    Evaluation of Wrong-Way Driving Detection Technologies
    Finley, Melisa D. ;
    Venglar, Steven P.
    2024-01-01 | PDF
    Wrong-way driving (WWD) crashes occur when a motorist either inadvertently or deliberately drives in the opposite direction of travel on a divided roadway. For this research project, Texas A&M Transportation Institute researchers assessed the state-of-the-practice regarding WWD detection technology, developed a standardized testing mechanism to ass ...
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