United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2017-10-05
|
PDF
This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
...
One way in which State Departments of Transportation (DOTs) can modernize their rest areas while reducing operations and maintenance costs is by incorporating sustainable practices into rest area design and operations. Sustainability practices that DOTs have pursued at their rest areas include green building design, changing operations procedures,
...
The Federal Highway Administration's Road Weather Management Program (RWMP) assesses its progress toward meeting programmatic objectives through established performance measures. Assessments have been completed and documented in 2009, 2012, and 2015, and this update is the next iteration of this periodic review. While previous updates reported each
...
Bridge decks are commonly rehabilitated using overlays depending on the cause of deck deterioration, available budget, and desired service life of the rehabilitated structure. One emerging solution for bridge deck rehabilitation is thin, bonded ultra-high performance concrete (UHPC) overlays. As an overlay material, UHPC can provide both structural
...
Large, passively collected datasets from location-based services are a potential asset to transportation planning and modeling. These data have near-real-time availability and can capture travel behavior of a wide swath of the population. These data clearly hold promise for multiple transportation modeling methods, but practitioners should be aware
...
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-10-01
|
PDF
Traffic signal backplates—thin plates of material that surround traffic signal indication light arrays—are intended to improve the visibility of a traffic signal by providing a consistent and controlled-contrast background. Attempts to further enhance the visibility and conspicuity of traffic signals have led to the addition of narrow strips of ret
...
In an intermodal transportation network, trains, trucks, ships, and aircraft are connected in a seamless system that is efficient and flexible, and meets the needs of the nation’s consumers, carriers, and shippers. An intermodal system includes both origins and destinations (e.g. ports, railheads and warehouses) and the links between them (e.g. roa
...
Many transportation planning models rely on estimates of origin-destination (OD) travel flows for inputs or validation. Conventional 4-step travel demand models estimate origins and destinations using trip generation and trip distribution approaches. Given the importance of the OD matrix in this type of modeling, several methods and datasets have b
...
The Congestion Mitigation and Air Quality Improvement (CMAQ) program provides a flexible funding source for State and local governments to fund transportation projects and programs to help meet the requirements of the Clean Air Act (CAA) and its amendments. The legislation is codified at 23 USC Sec 149. CMAQ money supports transportation projects t
...
The Federal Highways Administration (FHWA) sponsors a Technical Assistance (TA) effort to support states in applying Context Sensitive Solutions (CSS) to challenges they face in the transportation sector. Each state participating in the TA effort is invited to identify one issue to tackle using a CSS approach, with FHWA assistance. Participating st
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2017-10-01
|
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
...
The Tampa Hillsborough Expressway Authority (THEA) Connected Vehicle (CV) Pilot Deployment Program is intended to develop a suite of applications that utilize vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication technology to reduce traffic congestion, improve safety, and decrease emissions. These CV applications support a fle
...
Diesel engines play a vital role in key industry sectors including freight, public transportation, construction, and agriculture. However, diesel exhaust contains high levels of fine particulate matter (PM2.5) emissions, which can pose significant risks to public health, including causing lung damage and premature death. Diesel retrofits offer a co
...
Implementation of current understanding, analytical tools, and new test methods must be accelerated if the construction industry is to continue to meet the infrastructure needs of the community at large in an environment of shrinking budgets. A continuing challenge to the concrete paving industry is the ever present need to implement new technologi
...
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
...
Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2017-10-01
|
PDF
The Federal Highway Administration’s (FHWA’s) Long-Term Bridge Performance (LTBP) Program is a long-term research effort, authorized by the U.S. Congress under the Safe, Accountable, Flexible, Efficient Transportation Equity Act legislation, to collect high-quality bridge data from a representative sample of highway bridges nationwide that will hel
...
This primer aims to assist States and MPOs with the implementation of performance-based freight planning and programming, as established under MAP-21 and the FAST Acts, by recommending freight performance measurement practices and appropriate performance measures. The primer provides a comprehensive list of freight performance measures with their a
...
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2017-10-01
|
PDF
Transportation agencies consider various factors in comparing project alternatives and justifying investment decisions. Such factors may include: Safety performance; Operational efficiency; Environmental impacts and mitigation; Economic impacts. Agencies quantify the operational, environmental, and economic impact of project alternatives using read
...
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.