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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 4021 - 4040 of 36908 results
  • Meeting the 21st Century SurveyingGeomatics Education Needs of GDOT and Georgia
    Meeting the 21st Century Surveying–Geomatics Education Needs of GDOT and Georgia
    Scott, David ;
    Maldonado, Gustavo
    2021-06-01 | PDF
    This research project establishes ways to serve the surveying–geomatics (S-G) education needs of place-bound students, such as Georgia Department of Transportation (GDOT) personnel and others. It addresses the need for personnel with a 21st century education (knowledge and skills) in surveying–geomatics. Many factors, including lack of traditional ...
  • Michigan Transportation Construction Price Index Final Report I
    Michigan Transportation Construction Price Index [Final Report I]
    Liu, Hexu ;
    Kwigizile, Valerian
    2021-06-01 | PDF
    A highway construction cost index (HCCI) measures the price changes over time in the highway construction industry. It allows Departments of Transportation (DOTs) to monitor highway construction market conditions so that they can more accurately project long-term funding needs. Michigan has not yet established a methodology for HCCI calculation or ...
  • Development and Demonstration of an InVehicle Lane Departure Warning System Using Standard GPS Technology
    Development and Demonstration of an In-Vehicle Lane Departure Warning System Using Standard GPS Technology
    Chowdhury, Shahnewaz ;
    Hossain, Md Touhid
    2021-06-01 | PDF
    A lane departure warning system (LDWS) has significant potential to reduce crashes on roads. Most existing commercial LDWSs use some kind of image processing techniques with or without Global Positioning System (GPS) technology and/or high-resolution digital maps to detect unintentional lane departures. However, the performance of such systems is c ...
  • Development of a NetworkLevel Evaluation Tool for Managing Its Infrastructure
    Development of a Network-Level Evaluation Tool for Managing Its Infrastructure
    Van Hecke, Samuel ;
    Gallagher, Mark R.
    2021-06-01 | PDF
    The research team developed a methodology and implementation tool for the evaluation of Intelligent Transportation System (ITS) projects. The tool enables users to define packages of ITS improvements and provides a planning-level benefit/cost analysis output based on roadway data (such as delay and safety).
  • Improving the LongTerm Condition of Pavements in Massachusetts and Determining Return on Investment Implementing the AASHTO MechanisticEmpirical Pavement Design Guide Phase I
    Improving the Long-Term Condition of Pavements in Massachusetts and Determining Return on Investment: Implementing the AASHTO Mechanistic-Empirical Pavement Design Guide Phase I
    Mogawer, Walaa S. ;
    Austerman, Alexander J.
    2021-06-01 | PDF
    The goal of this study was to conduct a thorough literature review to determine the overall state-of-practice with regards to AASHTO Mechanistic Empirical Design Guide (MEPDG) implementation with focus on local verification and calibration. The literature review presented outlines the steps taken by other state agencies to perform local calibration ...
  • Pavement Thickness Evaluation Using 3D Ground Penetrating Radar
    Pavement Thickness Evaluation Using 3D Ground Penetrating Radar
    Khazanovich, Lev
    2021-06-01 | PDF
    The objective of this research was to develop a procedure for nondestructive assessment of pavement thickness using 3D ground penetrating radar (3D GPR). The software developed in this study can analyze the data sets collected with either 27- or 121- transmitting and receiving pair configurations. It uses two approaches to determine asphalt thickne ...
  • CPTBased Geotechnical Design Manual Volume 3 CPTBased Design of FoundationsExample Problems
    CPT-Based Geotechnical Design Manual, Volume 3: CPT-Based Design of Foundations—Example Problems
    Sakleshpur, Venkata Abhishek ;
    Prezzi, Monica
    2021-06-01 | PDF
    This manual provides guidance on how to use the cone penetration test (CPT) for site investigation and foundation design. The manual has been organized into three volumes. Volume 1 covers the execution of CPT-based site investigations and presents a comprehensive literature review of CPT-based soil behavior type (SBT) charts and estimation of soil ...
  • Aftermarket Cameras in Winter Maintenance Vehicles
    Aftermarket Cameras in Winter Maintenance Vehicles
    Gallagher, Mark ;
    Curd, Chris
    2021-06-01 | PDF
    Mounting video cameras on winter maintenance vehicles can assist with operational decisions and enhance situational awareness for operators. To help agencies maximize the benefits of these systems, this project conducted a state-of-the-practice literature review, survey and interviews to identify types, uses and best practices for on-vehicle camera ...
  • Adoption and Diffusion of Electric Vehicles in Maryland
    Adoption and Diffusion of Electric Vehicles in Maryland
    Cirillo, Cinzia ;
    Bas, Javier
    2021-06-01 | PDF
    Among the many approaches toward fuel economy, the adoption of electric vehicles (EVs) may have the greatest impact. However, existing studies on EV adoption predict very different market evolutions, which causes a lack of solid ground for strategic decision making. New methodological tools, based on Artificial Intelligence, might offer a different ...
  • Evaluation of Factors Influencing Roundabout Performance
    Evaluation of Factors Influencing Roundabout Performance
    Rodgers, Michael O. ;
    Gbologah, Franklin
    2021-06-01 | PDF
    This project focused on determining the potential impacts of various geometric and operational parameters on gap-acceptance behavior for approaches to roundabouts in the metro-Atlanta area. Twelve roundabouts were selected to provide a range of different conditions in terms of number of legs, number of circulating lanes, conflicting volumes, presen ...
  • Developing Effective Traffic Management Strategies for Special Events based on ADMS Dataset Findings and Recommendations for LA METRO
    Developing Effective Traffic Management Strategies for Special Events based on ADMS Dataset: Findings and Recommendations for LA METRO
    METRANS Transportation Center (Calif.)  ...
    2021-06-01 | PDF
    Major events are a significant source of traffic congestion, especially in large metropolitan areas. We conduct a case study of football games played at the Los Angeles Memorial Coliseum; a venue located near downtown Los Angeles with a capacity of about 80,000. Two teams play home games at the Coliseum, the Los Angeles Rams, and the University of ...
  • Image Processing and Machine Learning Techniques for Automated Detection of Planes at Utah Airports
    Image Processing and Machine Learning Techniques for Automated Detection of Planes at Utah Airports
    Farhadmanesh, Mohammad ;
    Rashidi, Abbas
    2021-06-01 | PDF
    Most of the airports in the United States are non-towered airports. Utah is not an exception to this rule. As a result, these airports fall behind in terms of aircraft operation count and identification. On the other hand, image detection and recognition have long been assisting different industrial areas in shifting towards automation in performin ...
  • Fatigue Life Estimation of Bridges With Smart Mobile Sensing
    Fatigue Life Estimation of Bridges With Smart Mobile Sensing
    Pakzad, Shamim N ;
    Takac, Martin
    2021-06-01 | PDF
    Bridge structures experience significant vibrations and repeated stress variations during their lifecycle. These conditions are the bases for fatigue analysis to identify fatigue cracking, which can be used to accurately establish the remaining fatigue life of the structures (i.e., the number of stress cycles before fatigue failure). This is typica ...
  • Platooning for Improved Safety and Efficiency of SemiTrucks PISES II
    Platooning for Improved Safety and Efficiency of Semi-Trucks (PISES) II
    Viswanathan, Venkat ;
    Shankar, Varun
    2021-06-01 | PDF
    Advances in both scientific computing and machine learning (ML) have led to techniques to improve, replace, or speed up methods to solve problems in the physical sciences. For many nonlinear systems, traditional methods of calculation often carry a heavy computational burden due to complex dynamics, physical constraints, or multi-scale behavior. Th ...
  • Field Implementation of the Vertical In situ Permeameter VIP Final Report
    Field Implementation of the Vertical In situ Permeameter (VIP) [Final Report]
    Rodgers, Michael ;
    Mohseni, Ana
    2021-05-31 | PDF
    This research involved improving the vertical in situ permeameter (VIP), a new apparatus developed in FDOT Project BDV31-977-23 for estimating in situ permeability, and validating the prior research results through statewide testing. The VIP is a unique wireless instrument that allows the engineer to estimate mean permeability at multiple depths re ...
  • Exploring the Influence of Carbon Footprint and Health Benefits in Parking Location Decisions
    Exploring the Influence of Carbon Footprint and Health Benefits in Parking Location Decisions
    Cheu, Ruey Long ;
    Ruiz, Emiliano
    2021-05-31 | PDF
    The objective of this project is to answer the Research Question: If the information on carbon footprint and health benefits are available, what are their influences relative to permit fee and last-mile travel time in parking location decisions? This project focused on commuter students at The University of Texas at El Paso (UTEP). In this project, ...
  • Design and Detailing of CastinPlace and Precast Concrete Approach Slabs
    Design and Detailing of Cast-in-Place and Precast Concrete Approach Slabs
    Morcous, George ;
    Abo-Elkhier, Mostafa
    2021-05-31 | PDF
    Approach slab is a structural concrete slab that spans from the backwall of the abutment (i.e. end of the bridge floor) to the beginning of the paving section. The purpose of the approach slab is to carry the traffic loads over the backfill behind the abutments to avoid differential settlement that causes bumps at the bridge ends. Castin-place conc ...
  • Rapid Seismic Repair of Column to Footing Connections Phase 2
    Rapid Seismic Repair of Column to Footing Connections – Phase 2
    Brodbeck, Taylor J ;
    Shurow, Zachary A
    2021-05-31 | PDF
    Presented in this report is the development of a rapid seismic repair of column to footing connections. The use of plastic hinge relocation as a repair technique for extreme levels of damage in reinforced concrete bridge columns is investigated. Before the development of this repair, if a column was severely damaged (e.g. had fractured longitudinal ...
  • Enhancing Traffic Flow and Driving Safety via Artificial Intelligence
    Enhancing Traffic Flow and Driving Safety via Artificial Intelligence
    Shahmoradi, Amir ;
    Osborne, Joshua
    2021-05-31 | PDF
    Motivated by the priorities highlighted by Texas Department of Transportation (TXDOT) and following the guidelines in the recent presidential "Executive Order on Maintaining American Leadership in Artificial Intelligence" in 2019, this proposal aims to utilize the state-of-the-art tools and techniques in the field of Artificial Intelligence and Dat ...
  • Identification of Metrics Used for Varying Levels of Traffic Analysis
    Identification of Metrics Used for Varying Levels of Traffic Analysis
    Xiong, Chenfeng ;
    Yang, Mofeng
    2021-05-21 | PDF
    This project was completed to support the Maryland Department of Transportation State Highway Administration (MDOT SHA) as it actively pursues the most appropriate metrics for transportation projects decision making. The goal of this research project was to identify the state-of-the-practice performance metrics currently employed by state agencies ...
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