United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
2019-11-01
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PDF
This Technical Brief provides an overview of the several initiatives that encompass the concept of Performance Engineered Pavements (PEP). This document serves as the first in a series of PEP technical briefs on designing and accepting our nation's pavements for performance. Future technical briefs will focus on Asphalt Performance Testing (APT), C
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The Federal Highway Administration (FHWA) Office of Safety, in cooperation with the Highway Safety Manual (HSM) Implementation Pooled Fund Study, recently completed a safety analysis needs assessment for TSMO. The safety analysis needs assessment characterized the current state of practice, knowledge, and skills for quantifying the safety performan
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The Federal Highway Administration (FHWA) Office of Safety, in cooperation with the Highway Safety Manual (HSM) Implementation Pooled Fund Study, recently completed a safety analysis needs assessment for TSMO. The safety analysis needs assessment characterized the current state of practice, knowledge, and skills for quantifying the safety performan
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Dynamic part-time shoulder use (D-PTSU) opens shoulders for travel beyond fixed (or static) time periods (e.g., weekday peak periods). Dynamically operating the transportation system by matching supply-side strategies in accordance with prevailing conditions and travel demands represents an important advancement in agency adoption of Active Transpo
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United States. Department of Transportation. Federal Highway Administration. Western Federal Lands Highway Division
2019-11-01
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Federal Lands Highway
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The purpose of this report is to summarize the study of the transportation characteristics of the Teton Dam site and provide potential improvements to the site. Construction of the Teton Dam was completed in 1976 . On its first fill on June 5, 1976, the dam failed causing a catastrophic event leading to the loss of 11 lives and millions of dollars
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Hydraulic cement concrete (hereafter referred to simply as concrete) is composed of aggregates bound together by a hydrated cement paste. Concrete contains a significant amount of porosity including small gel pores (0.5 to 10 nm in size) that are an intrinsic feature of the hydration products formed when water reacts with cement, capillary pores (1
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-11-01
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On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, prov
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This report presents a summary of the 2019 Traffic Incident Management Capability Maturity Self-Assessments (TIM CM SA) completed by transportation personnel from 94 locations across the country between June and September, 2019. There are 55 scored questions in the TIM CM SA that are grouped into three sections: Strategic, Tactical, and Support. Th
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2019-11-01
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FHWA R&T Now
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Federal Highway Administration's FHWA R&T Now is a newsletter containing information and updates about research, technology, and development from the U.S. Department of Transportation, Federal Highway Administration. The newsletter is an electronic newsletter and is updated approximately every other month.
A before-after empirical Bayes analysis was performed using data from 115 treated intersections in Charlotte, NC, and 218 treated intersections in Philadelphia, PA, to evaluate the safety effects of pedestrian countdown signals (PCSs). Additionally, the evaluation included 136 reference intersections in Charlotte, NC, and 597 reference intersection
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-11-01
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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
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The California Department of Transportation uses its Performance Measurement System to estimate work zone impacts, plan closures, manage performance during construction, and evaluate work zone management practices post-construction.
United States. Federal Highway Administration. Center for Accelerating Innovation
2019-11-01
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PDF
Innovator, published by the FHWA Center for Accelerating Innovation, advances implementation of innovative technologies and processes in the highway industry. Its audience is transportation professionals in highway agencies, trade and research groups, academia and the private sector, and the driving public.
Individuals with cognitive disabilities, such as intellectual and developmental disability, those on the autism spectrum, and people with traumatic brain injuries, can face significant obstacles in accessing America’s many transportation options. Many of these individuals do not own or use personal vehicles, and can be reliant on public transportat
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Economic Effect of Restricted Crossing U-The RCUT, aka J-turn intersection, is an innovative alternative intersection design that displaces leftturn and through movements from the minor street. There is sufficient evidence that these designs reduce severe injury crashes and the FHWA hence added them to their list of “Proven Safety Countermeasures.”
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United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office
2019-11-01
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PDF
Connected vehicle technologies enable vehicles, roadside infrastructure, and personal portable devices to communicate and share information through wireless communication technology. Onboard units (OBUs) installed on vehicles will continually broadcast information on the vehicle’s position, direction, and speed in the form of a Basic Safety Message
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The variability of a concrete paving mixture can have a significant impact on the performance of the concrete pavement and impact its overall service life. Mixture variability can lead to inconsistent workability, poor consolidation, built-in roughness, and areas of weaker, less durable concrete, all of which can negatively affect pavement performa
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-10-31
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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
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2019-10-25
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ZIP
The Federal Highway Administration (FHWA) developed the innovative CARMASM Platform to encourage collaboration with the goal of improving transportation efficiency and safety. FHWA's interest in advancing Transportation Systems Management and Operations (TSMO) strategies with automated driving technology is focused on how infrastructure can move tr
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-10-17
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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
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