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.
This report documents and presents algorithms and procedure developed for extracting high-accuracy high-resolution trajectory data from roadside LiDAR sensors. The developed methods were evaluated with data from various traffic scenarios. Pilot applications of roadside LiDAR trajectory data for pedestrian-crossing-road prediction, animal-crossing-
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Load-matching technology for truckers and shippers helps an inefficient and often fragmented local trucking market by eliminating non-revenue-generating trips. The basic idea of the technology is to provide a real-time, GPS-based connection between shippers and carriers, somewhat similar to how Uber and Lyft connect drivers and passengers.
This document introduces and summarizes the training workshop material produced during this project and provides guidelines for future instructors to help disseminate project content and findings to interested practitioners. Following this introduction to the three components of the December 2018 training workshop are the three PowerPoint presentat
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In recent years, the use of Reclaimed Asphalt Pavement (RAP) is becoming more common for asphalt pavement construction and maintenance, primarily because of the economic and environmental benefits. However, despite Georgia Department of Transportation’s extensive use of RAP in its asphaltic concrete mixtures, thousands of tons of RAP continue to ac
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This research assessed the suitability of Anonymous Re-identification (ARID) technology to measure northbound commercial vehicle wait time at the San Luis II Commercial Port of Entry (POE) in San Luis, Arizona. The study aimed to (1) determine the preferred ARID technology (Wi-Fi or Bluetooth) for the study location; (2) determine whether the sampl
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An inductive loop signature technology was previously developed by a US Department of Transportation (DOT) Small Business Innovation Research (SBIR) program to classify vehicles along a section of the roadway using existing inductive loop detectors installed under the pavement. It was tested and demonstrated in California that the loop signature sy
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From a methodological perspective, the telematics-based, large-scale data collection technique has strengths for evaluating safety systems, including cost, sample size, drivers using their own vehicles, ability to look at long-term effects, data efficiency, and the ability to get “rapid-turnaround” large-scale results. These strengths are particula
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Building upon the development of a measure of safety culture based on a simplified two-factor model of meaning and behavior, a further validation study of the safety culture instrument was undertaken. The Safety Culture Assessment Survey (SCAS) was administered to a large regional railroad organization at two separate times. The instrument has demo
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2018-10-01
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Domestic Airline Fares Consumer Report
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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
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The Georgia Department of Transportation authorized a series of tests to be performed on guardrails installed in accordance with GDOT Standard Detail S-4-2002, which was used in Georgia prior to 2017 and includes an asphalt mow strip with nearby curb. The University of Nebraska’s Midwest Roadside Safety Facility (MwRSF) was selected to perform the
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Seat belt interlock systems may be an effective means of increasing seat belt use in light vehicles. A seat belt interlock system determines if a vehicle occupant is not wearing the seat belt properly and, if seat belt misuse is detected, takes some action to limit the operation of the vehicle. In 2016, NHTSA funded a project to develop a prototype
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This project aims to evaluate the effectiveness of the quality measures employed by the Wisconsin Department of Transportation to influence the in-service performance of flexible pavements. The study involved creating a relational geo-referenced database connecting production, placement, and routine in-service performance data collected over the ye
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This is an applied research program. The research is a study of existing examples within INDOT to find examples of where LEAN tools and methodology have been successfully used to solve problems and improve efficiency. This research will be shared in a series of workshops where the participants will immediately apply the underlying principles to cur
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Social marketing seeks to develop and integrate marketing concepts with other approaches to influence behaviors that benefit individuals and communities for the greater social good. Social marketing is a useful transportation demand management (TDM) planning approach to promote travel-behavior change. The purpose of this study was to explore a cons
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Motorcycle crashes are overrepresented on horizontal curves, especially along rural two-lane roads. Most roadway design and traffic control strategies on horizontal curves include limited considerations for motorcycles. It is necessary to conduct a study to investigate the factors contributing to motorcycle crash risk on horizontal curves and ident
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Regional coordination in anticipation of the widespread use of connected vehicles/autonomous vehicles (CVs/AVs) will better educate New England’s population, influence policy, reduce costs, and provide safer and more efficient roadways for the traveling public. This document provides considerations for identified cross-border issues and a roadmap f
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Many transportation organizations have embraced Accelerated Bridge Construction (ABC) to reduce both the traffic impacts and societal costs. One of the most common means to achieve ABC is to utilize prefabricated elements that are connected on site to construct a bridge. ABC will not be effective if the barrier requires cast-in-place construction.
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This study was conducted to advance the High Line Corridor Pneumatic Waste-Management Initiative toward the implementation stage. The High Line is a 1.5-mile viaduct, once used to provide rail-freight service for a manufacturing district in Manhattan, which is now a park. The project would attach a pneumatic tube to this viaduct to transport three
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The climate impact of bioenergy is commonly quantified in terms of CO2 equivalents, using a fixed 100‐year global warming potential as an equivalency metric. This method has been criticized for the inability to appropriately address emissions timing and the focus on a single impact metric, which may lead to inaccurate or incomplete quantification o
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In this implementation effort, a laser-based scanning system was adapted to test aggregates from five sources before and after Micro-Deval abrasion and embedded in a ring-shaped polyester material. Improvements to the ring-shaped specimen preparation procedure were identified. The Aggregate Ring Texturing System (ARTS) hardware and software were us
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