United States. Department of Transportation. Federal Highway Administration. Office of Natural Environment
2022-01-01
|
PDF
The U.S. Department of Transportation’s (USDOT) Health in Transportation (HinT) Working Group examines and promotes the Department’s existing policies and programs to assist modal agencies address health-related topics that are raised by staff, project sponsors, and the public. The Working Group covers topics such as safety, equity, accessibility,
...
Automation is the future of transportation. Research on autonomous driving technology and vehicles is taking place throughout America, and the technology is primed to transform existing and future transportation systems. As the technology for autonomous vehicles continues to develop and eventually becomes ready for real-world testing, cooperative a
...
This report presents the independent evaluation results of Exploring a Mileage-Based User Fee in a Multi-State Region – an Eastern Transportation Corridor Coalition (TETC) initiative, which was funded through Phase I of the U.S. Department of Transportation’s Surface Transportation System Funding Alternatives Program. Delaware is one of eight entit
...
This report presents the independent evaluation results of the Regional Road Usage Charge (RUC) System Definition and Pilot Planning Project by the Western Road Usage Charge Consortium (RUC West), which received fiscal year (FY) 2016 funding from the U.S. Department of Transportation’s Surface Transportation System Funding Alternatives Program. RUC
...
Cooperative driving automation (CDA) aims to improve the safety, traffic throughput, and energy efficiency of the transportation network by allowing vehicles and infrastructure to work together to coordinate movement. The objective of this project is to advance the CARMASM ecosystem and its capabilities by enhancing CDA participants' interaction wi
...
This research project aimed to explore and evaluate the effects of directional signing alternatives for intersections requiring U-turns on drivers’ comprehension of the signs, time required to comprehend each alternative, and preferences among the alternatives.
This project investigated the influence of intersection corner radius on pedestrian crashes and right-turn vehicle speed. The corner radius can be unique to each corner at an intersection; therefore, this study assigned crashes to an intersection corner rather than to the entire intersection. For corner-level pedestrian crashes, the following varia
...
A product of the Federal Highway Administration’s (FHWA’s) Safety Research and Development Program, the Interactive Highway Safety Design Model (IHSDM) is a suite of safety analysis tools to evaluate the safety and operational effects of geometric-design decisions on highways. The following resources are available to individuals considering or usin
...
The Federal Highway Administration (FHWA) and the transportation community have a longstanding goal to improve the performance and extend the life of transportation infrastructure. The Moving Ahead for Progress in the 21st Century Act emphasizes risk-based and performance-based requirements to plan and program the most efficient use of Federal tran
...
United States. Department of Transportation. Federal Highway Administration
2022-01-01
|
PDF
Excessive speeding in cities can be particularly deadly for vulnerable road users, especially on busy arterials with high volumes of vehicle, pedestrian, and bicycle interaction. Only five out of 10 pedestrians will survive a crash with a vehicle traveling at 42 miles per hour (mph). Transportation practitioners use a variety of strategies to manag
...
Diverging Diamond Interchanges (DDIs) are characterized by crossover intersections at the ramp termini where cross-street traffic crosses over to the left-hand side of the roadway between the ramps to allow unopposed left turns to and from the ramps. DDIs are used in situations with grade-separated interchanges.
United States. Department of Transportation. Federal Highway Administration
2022-01-01
|
PDF
Restricted Crossing U-Turn (RCUT) intersections replace direct through and left-turn movements from the minor approaches with an indirect movement of a right-turn/U-turn combination.
United States. Department of Transportation. Federal Highway Administration
2022-01-01
|
PDF
Median U-Turn (MUT) intersections refer to any intersection replacing direct left turns at an intersection with indirect left turns that rely on a U-turn/right-turn combination.
United States. Department of Transportation. Federal Highway Administration
2022-01-01
|
PDF
Displaced Left Turn (DLT) intersections are crossover-type intersections that can be applied to high-volume signalized arterial intersections—especially those characterized by heavy left-turn volumes that conflict with heavy opposing through volumes.
United States. Department of Transportation. Federal Highway Administration
2022-01-01
|
PDF
Quadrant Roadway (QR) intersections feature one main intersection and two secondary, or auxiliary, intersections where left turns are displaced to a connector road in one quadrant of the main intersection.
Stop-controlled intersections include any conventional intersection where one or more approaches are controlled by a STOP sign. However, there are significant differences between intersections with multi-way stop control (typically all-way stop, or AWS) and minor road stop (MRS) control.
The Federal Highway Administration (FHWA) Global Benchmarking Program (GBP) supports access, evaluation, and implementation of proven, global technology innovations and best practices that can improve highway transportation in the United States. The GBP Building Information Modeling for Infrastructure (simply referred to herein as BIM) study docume
...
As the importance of an integrated transportation system continues to evolve and grow, U.S. transportation agencies are identifying Intelligent Transportation Systems (ITS) assets as critical elements in asset management and long-range planning. Current research continues to suggest that transportation agencies can benefit from including ITS assets
...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.