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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 4441 - 4460 of 36908 results
  • Safety of the Urban Freight System Key Performance Indicators
    Safety of the Urban Freight System: Key Performance Indicators
    Lyons, Torrey ;
    McDonald, Noreen
    2020-12-01 | PDF
    Goods movement benefits the North Carolina economy by providing firms and consumers with needed materials. The freight sector has long monitored key performance indicators (KPIs) focused around delay and efficiency. This project focused on how monitoring of road safety KPIs could benefit goods movement in North Carolina. We recommend that North Car ...
  • Public Response to Different Planting Techniques for Annual Color and Enhancement
    Public Response to Different Planting Techniques for Annual Color and Enhancement
    Manoosingh, Celine ;
    Cubas, Francisco J
    2020-12-01 | PDF
    The objective of this study was to measure public perception of the different planting techniques (block and matrix), which are used at visitor information centers (VICs) and other rights of way (ROW) areas. The main factors that affect public perception of planting techniques were identified through an extensive literature review and qualitative s ...
  • Maritime Freight Data Collection Systems and Database To Support Performance Measures and Market Analyses
    Maritime Freight Data Collection Systems and Database To Support Performance Measures and Market Analyses
    Sriraj, P S ;
    Zou, Bo
    2020-12-01 | PDF
    The Illinois Marine Transportation System (IMTS) is a key component of the nation’s inland waterway system. IMTS is comprised of 27 locks and dams, 19 port districts, more than 350 active terminals, and 1,118 miles of navigable inland waterways traversing along the borderline or within the state of Illinois. However, the infrastructure of IMTS is a ...
  • VehicleTraffic Control with LimitedCapacity ConnectedAutomated Vehicles
    Vehicle-Traffic Control with Limited-Capacity Connected/Automated Vehicles
    Ban, Xuegang (Jeff) ;
    Guo, Qiangqiang
    2020-12-01 | PDF
    This project studies methods to control both vehicle and traffic under limited penetration of low-level connected and autonomous vehicles (LCAVs). The investigation includes three major parts: (1) the Eco-Driving algorithm for a single CAV with low-level automation; (2) the vehicle in the loop (VIL) simulation platform; and (3) the integrated vehic ...
  • Literature Search on Use of Flexible Pipes in Highway Engineering for DOTDs Needs
    Literature Search on Use of Flexible Pipes in Highway Engineering for DOTD’s Needs
    Jafari, Navid H ;
    Ulloa, H Omar
    2020-12-01 | PDF
    Drainage in Louisiana transportation projects are critical components in pavement infrastructure and are typically addressed using rigid concrete pipes. Plastic pipes include many various polymer-based materials, e.g., high-density polyethylene (HDPE), polyvinyl chloride (PVC), and polypropylene (PP). A long-term track record of rigid concrete pipe ...
  • Identifying and Tracking Emerging Transportation Trends and Indicators
    Identifying and Tracking Emerging Transportation Trends and Indicators
    Jin, Xia ;
    Alam, Md Rakibul
    2020-12-01 | PDF
    This report presents a study in understanding the impacts of external trends on transportation demand. Two major efforts were carried out in this project: (1) a nationwide survey was conducted to solicit opinions from transportation professionals to evaluate the impacts of various existing and emerging trends on transportation demand, and (2) geo-t ...
  • Resources Practices and Needs for Weather Forecasting to Facilitate Winter Road Maintenance Synthesis Report
    Resources, Practices and Needs for Weather Forecasting to Facilitate Winter Road Maintenance: Synthesis Report
    CTC & Associates LLC
    2020-12-01 | PDF
    A transportation agency’s ability to deliver effective winter road maintenance combines three essentials: a professional, knowledgeable staff, including trained snowplow operators; a fleet of high-quality, well-maintained equipment and appropriate supplies; and, perhaps most important and most difficult to consistently acquire, accurate and timely ...
  • Economic Impact Analysis of Georgias Rural and Small Urban Transit Systems Volume 2
    Economic Impact Analysis of Georgia’s Rural and Small Urban Transit Systems, Volume 2
    Garrow, Laurie A. ;
    Dhongde, Shatakshee
    2020-12-01 | PDF
    On March 30, 2017, the Georgia Legislature passed House Resolution 848 to create a Commission on Transit Governance and Funding. The Commission’s mission is to “study and assess the needs for and means of providing a system of mass transportation…in the state and [identify] potential methods of funding such systems” (HR 848). Currently, the State o ...
  • State and DOT Level Administration of Land Ownership Issues Across Navigable Waterways
    State and DOT Level Administration of Land Ownership Issues Across Navigable Waterways
    Johnston, Karen M ;
    Marshall, John T
    2020-12-01 | PDF
    This report examines current legal right of ownership issues arising in right-of-way land acquisition for highway projects crossing navigable waterways. The objective of this report is to help the state and GDOT be better positioned to deliver its program in a timely manner, simplify administrative understandings and efforts between agencies, reduc ...
  • Study of Gap Acceptance and Walking Speeds of Pedestrians Using Virtual Reality Simulation
    Study of Gap Acceptance and Walking Speeds of Pedestrians Using Virtual Reality Simulation
    Figueroa-Medina, Alberto M ;
    Valdes-Diaz, Didier M
    2020-12-01 | PDF
    The focus placed on pedestrian safety is based on the alarming increase in fatalities in the U.S. in recent years. The 6,283 pedestrian fatalities observed in 2018 was the largest number on record from the previous 28 years. The study of pedestrian behavior and the evaluation of new and innovative pedestrian safety countermeasures are needed to red ...
  • Transportation of Hazardous Materials Through EisenhowerEdwin C Johnson Memorial Tunnel Study Executive Summary Only
    Transportation of Hazardous Materials Through Eisenhower-Edwin C Johnson Memorial Tunnel – Study (Executive Summary Only)
    Dix, Arnold ;
    English, Gary
    2020-12-01 | PDF
    Senate Bill (SB) 19-032 required CDOT to conduct a study assessing the feasibility of allowing the transportation of hazardous materials through EJMT and to prepare a study report that includes the findings and recommendations as to whether and under what conditions the transportation of hazmat through the tunnel could be allowed.
  • Modernize Hydrologic Prediction Processes by Creating Custom Statewide SSURGO Green and Ampt Parameter Database Task 1 Hydrologic Methodology Assessment
    Modernize Hydrologic Prediction Processes by Creating Custom Statewide SSURGO Green and Ampt Parameter Database Task 1: Hydrologic Methodology Assessment
    JE Fuller Hydrology & Geomorphology, Inc.
    2020-12-01 | PDF
    This document is intended to function as an example of the use of soils data and methods required to implement the Green and Ampt methodology within the state of Nevada. An example hydrologic watershed model was supplied by Nevada Department of Transportation (NDOT). The hydrologic model used the Natural Resources Conservation Service (NRCS) curve ...
  • Long Distance Wireless Radio Frequency Link for the ITS Statewide Network
    Long Distance Wireless Radio Frequency Link for the ITS Statewide Network
    Kopp, Brian
    2020-12-01 | PDF
    This project began an investigation into whether it is possible to create a useful microwave communications link across the Gulf of Mexico in order to link the linear Florida Department of Transportation networks in the Florida Keys and Florida Panhandle, creating network redundancy for the first time for both segments. The work in this project has ...
  • Bridge Deck Inspection Using Small Unmanned Aircraft Systems Based Airborne Imaging Techniques
    Bridge Deck Inspection Using Small Unmanned Aircraft Systems Based Airborne Imaging Techniques
    Zhang, Su ;
    Baros, Shirley V
    2020-12-01 | PDF
    As one of critical components of a transportation infrastructure system, bridges are very important to a country’s economy because they provide passage over physical obstacles to substantially reduce travel time and travel cost. Similar to other types of transportation infrastructure, bridges deteriorate over time. Therefore, bridges should be rout ...
  • Synthesis on Documentation and Tracking Research Implementation
    Synthesis on Documentation and Tracking Research Implementation
    Sadek, Husam ;
    Hassan, Marwa
    2020-12-01 | PDF
    In general, research funding departs from short-term objectives if the research results are not implementable. Planned and documented technology transfer efforts work to incorporate research findings and evidence-based interventions into real life. However, many research studies in different areas and fields were completed successfully without a re ...
  • Effects of Charging Infrastructure Characteristics on Electric Vehicle Preferences of New and Used Car Buyers in the United States
    Effects of Charging Infrastructure Characteristics on Electric Vehicle Preferences of New and Used Car Buyers in the United States
    Zou, Tianqi ;
    Khaloei, Moein
    2020-12-01 | PDF
    The used car market is a critical element for the mass adoption of electric vehicles (EVs). However, most previous studies on EV adoption have focused only on new car markets. This article examines and compares the effects of charging infrastructure characteristics on the preferences for EVs among both new and used car buyers. This study is based o ...
  • Minimum Time to Situational Awareness During Transfer of Control Under Varying Levels of Task Load
    Minimum Time to Situational Awareness During Transfer of Control Under Varying Levels of Task Load
    Knodler, Michael A. ;
    Fitzpatrick, Cole D.
    2020-12-01 | PDF
    Technology advancements in the past two decades have made the human-vehicle connection stronger than ever. Since 2009 there has been a boom in the development of autonomous vehicles (AVs) as an increasing number of manufacturers have begun to see immense potential in this area of artificial intelligence (AI). While the private sector is racing forw ...
  • MASH Test 412 of Shallow Anchorage Single Slope Traffic Rail SSTR
    MASH Test 4-12 of Shallow Anchorage Single Slope Traffic Rail (SSTR)
    Moran, Sana M ;
    Bligh, Roger P.
    2020-12-01 | PDF
    The purpose of the tests reported herein was to assess the performance of the Texas Department of Transportation’s (TxDOT’s) shallow anchorage single slope traffic rail (SSTR) according to the safety-performance evaluation guidelines included in the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Saf ...
  • Development of Structurally Independent Foundations for 36inch Tall Single Slope Traffic Rail SSTR for MASH TL4
    Development of Structurally Independent Foundations for 36-inch Tall Single Slope Traffic Rail (SSTR) for MASH TL-4
    Sheikh, Nauman M. ;
    Bligh, Roger P.
    2020-12-01 | PDF
    The objective of this project was to develop structurally independent foundations for TxDOT’s 36-inch tall single slope traffic rail (SSTR). The barrier and foundation systems were required to meet AASHTO MASH Test Level 4 (TL-4) criteria, and require minimal maintenance after a design impact. Foundation designs were needed for two common field ins ...
  • Insitu Evaluation of Design Parameters and Procedures for Cementitiously Treated Weak Subgrades using Cyclic Plate Load Tests
    In-situ Evaluation of Design Parameters and Procedures for Cementitiously Treated Weak Subgrades using Cyclic Plate Load Tests
    Abu-Farsakh, Murad ;
    Ardah, Allam
    2020-12-01 | PDF
    This study aimed at evaluating the performance-related properties (e.g., resilient modulus and permanent deformation) of cementitious treated/stabilized subgrade soils under repeated loading test conditions. For this purpose, both laboratory and field testing programs were performed on treated/stabilized specimens/test sections. The laboratory test ...
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