This Technical Brief summarizes techniques employed by State DOTs in the use of high doses of reclaimed asphalt pavement (RAP) in asphalt mixtures and communicates the benefits observed.
This report summarizes proceedings of a virtual peer exchange sponsored by the Federal Highway Administration (FHWA) and hosted by the Association of Metropolitan Planning Organizations (AMPO) on June 22–23, 2021. The purpose of the peer exchange was to discuss how metropolitan planning organizations (MPOs) can build MPO capacity for using geograph
...
Since 1981, the Michigan Department of Transportation (MDOT) has worked with the Federal Highway Administration to complete the US 31 freeway connection between I-80/90 in northern Indiana to I-94 in Berrien County, Michigan. The latest construction on the US 31 freeway ended in 2003 with a terminal interchange at Napier Avenue in Berrien County. T
...
This case study presents a safety analysis conducted by the Wisconsin Department of Transportation (WisDOT) at the intersection of State Highway 75 (WIS 75) and Plank Road (County Road A) in Racine County, WI. WisDOT proactively identified key safety needs early in the project development process and used a data-driven approach to evaluate the safe
...
Safe, accessible, and efficient transportation is a prerequisite for health and prosperity. In comparison to the nation’s urban areas, rural communities face unique challenges in providing transportation that effectively serves their residents. The purpose of this study is to identify and address unmet safety and mobility needs in rural areas. To i
...
Federal regulations in 23 CFR part 630 subpart J require State highway agencies to conduct a Work Zone Process Review (WZPR) every 2 years to evaluate work zone processes and procedures, as well as identify systematic improvements to current and future projects. The Federal Highway Administration now encourages agencies to use a data-driven approac
...
This report represents a technology supplement to the 2014 Work Zone Intelligent Transportation Systems (WZITS) Implementation Guide (Report No. FHWA-HOP-14-008). The Guide forms the foundational framework, concepts, and methods for establishing a WZITS program. The Guide further introduces various Intelligent Transportation Systems (ITS) technolog
...
The Federal Highway Administration's Long-Term Pavement Performance (LTPP) program issues a triannual newsletter to inform you about the progress and activities of the program. Brief updates on progress in important program activities are provided, including data collection, data releases, new products and publications, pooled fund studies, and dat
...
The Federal Highway Administration's (FHWA's) Fostering Multimodal Connectivity Newsletter is intended to provide transportation professionals with real-world examples of ways that multimodal transportation investments promote economic revitalization, provide access to jobs, and achieve safer communities through support of accelerated project deliv
...
This Technical Brief provides an overview of the binder parameter Delta Tc (ΔTc). Delta Tc is an indicator of the effect of aging and additives on the asphalt rheology. More specifically, ΔTc provides insight into the relaxation properties of an asphalt binder that can contribute to non-load related cracking or other age-related embrittlement distr
...
Every Day Counts (EDC) is the Federal Highway Administration’s (FHWA’s) program to advance a culture of innovation in the transportation community in partnership with public and private stakeholders. Through this State-based effort, FHWA coordinates rapid deployment of proven strategies and technologies to shorten the project delivery process, enha
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-01
|
PDF
Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
...
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-09-01
|
PDF
The Pedestrian and Bike Forum newsletter provides information to FHWA stakeholders on reducing the number of pedestrian- and bicycle-related highway fatalities and serious injuries. Topics include updates on FHWA programs, spotlights on State and local noteworthy practices, initiatives with partner organizations, and upcoming events. It is publishe
...
This report presents a summary of the 2020 Traffic Incident Management Capability Maturity Self-Assessments (TIM CM SA) completed by transportation personnel from 99 locations across the country between September and December, 2020. Forty-one scored questions in the TIM CM SA are grouped into three sections: Strategic, Tactical, and Support. The TI
...
This TechBrief summarizes the planning, conduct, and outcomes of the Federal Highway Administration’s (FHWA’s) Long-Term Pavement Performance (LTPP) program Data Analysis Workshop. FHWA conducted a multiday virtual workshop in November 2020 to gather input from subject matter experts to update the LTPP Data Analysis Plan. Formerly known as the Stra
...
This brief summarizes an evaluation of how the Federal Highway Administration’s (FHWA’s) investment in eNEPA, an electronic tool, has affected interagency collaboration in developing environmental documents and conducting environmental reviews for major projects under the National Environmental Policy Act (NEPA).
United States. Department of Transportation. Federal Highway Administration
2021-09-01
|
PDF
Although several factors can influence the performance of an asphalt pavement, one of the most important is in-place density. A small increase in density can potentially lead to a significant increase in service life of asphalt. Highway agencies use specifications to achieve acceptable in-place density on their asphalt pavements. Density acceptance
...
The Federal Highway Administration and Traffic Analysis and Simulation Pooled Fund Study sponsored a research project on multiresolution modeling (MRM). The project's goal was to develop consistent definitions and a unified modeling framework for transportation professionals to help them better understand the opportunities and challenges associated
...
The use of passive data from location-based smartphone applications (LBS) and Global Positioning Services (GPS) to collect Annual Average Daily Traffic (AADT) has the potential to greatly reduce costs to State Department of Transportations (DOTs) and Metropolitan Planning Organizations (MPOs) and expand the coverage of up-to-date counts. This repor
...
The use of passive data from location-based smartphone applications (LBS) and Global Positioning Services (GPS) to collect Annual Average Daily Traffic (AADT) has the potential to greatly reduce costs to State Department of Transportations (DOTs) and Metropolitan Planning Organizations (MPOs) and expand the coverage of up-to-date counts. This repor
...
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.