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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 1201 - 1220 of 35448 results
  • 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 ...
  • Evaluation and Incorporation of Site and Laboratory Variability into LRFD Design of Pile Foundations Phase 2 Research Project Capsule 233SS
    Evaluation and Incorporation of Site and Laboratory Variability into LRFD Design of Pile Foundations— Phase 2: Research Project Capsule [23–3SS]
    Abu-Farsakh, Murad ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The main objectives of this research are to evaluate the different sources of geotechnical site variability and to quantify the effect of spatial site variability of soil properties; number, type, and quality of lab/in-situ test methods; number and type of pile load tests, location and distribution of soil borings /in-situ test methods, and gap cha ...
  • Evaluation of Louisiana Maintenance and Rehabilitation Treatment Decision Matrix for CostEffective and Timely Pavement Preservation Research Project Capsule 241P
    Evaluation of Louisiana Maintenance and Rehabilitation Treatment Decision Matrix for Cost-Effective and Timely Pavement Preservation: Research Project Capsule [24–1P]
    Wu, Zhong ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The objective of this study is two fold. First, the study will review and evaluate the current PMS decision matrix and provide recommendations on the trigger values for different maintenance and rehabilitation treatment types based on mechanistic-empirical pavement design, pavement performance modeling, machine learning, decision-tree optimization, ...
  • WebBased Tool To Advance Geotechnical Data Interchange and ReliabilityBased Site Characterization Research Project Capsule 242GT
    Web-Based Tool To Advance Geotechnical Data Interchange and Reliability-Based Site Characterization: Research Project Capsule [24-2GT]
    Gautreau, Gavin P. ;
    Rupnow, Tyson
    2024-01-01 | PDF
    This research will focus on innovative practices to improve geotechnical data management, highlighting the development and implementation of a web-based platform to efficiently visualize and interpret geotechnical data, and to eventually facilitate project delivery. A web-based platform can incorporate multiple types of geotechnical and geoenvironm ...
  • Evaluating Practical Applications of Unmanned Aerial Vehicles for Traffic Incident Response and Management Research Project Capsule 243SS
    Evaluating Practical Applications of Unmanned Aerial Vehicles for Traffic Incident Response and Management: Research Project Capsule [24–3SS]
    Moomen, Milhan ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The objectives of this research project are: • Assess the feasibility of UAV use in Louisiana’s traffic incident management (TIM) and monitoring • Document issues and challenges in drone use for incident response • Develop an information guide on UAV use for TIM.
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