This report assesses the impacts of a prototype of Dynamic Speed Harmonization (SPD-HARM) with Queue Warning (Q-WARN), which are two component applications of the Intelligent Network Flow Optimization (INFLO) bundle. The assessment is based on an extensive analysis of the Prototype using a Vissim simulation model for the US 101 freeway corridor in
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This Technical Report on Prototype Intelligent Network Flow Optimization (INFLO) Dynamic Speed Harmonization andQueue Warning is the final report for the project. It describes the prototyping, acceptance testing and small-scaledemonstration of the INFLO Prototype Speed Harmonization (SPD-HARM) and Queue Warning (Q-WARN)applications. This report als
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The goal of this research effort was to improve pedestrian safety at urban and suburban crossing locations by identifying and evaluating low- to medium-cost pedestrian treatments. The treatments were to have the potential to reduce pedestrian crashes at both midblock and intersection locations. While several treatments were considered during early
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This postcard describes events occurring while retiree Paul Anderson was working on a construction project on the North Cross-State Highway near Newhalem, Washington.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2015-06-01
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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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Learning in Progress, NHI's quarterly newsletter, provides updates on new course launches, upcoming Web conference seminars, training programs and events, and NHI policy changes.
As a part of the Federal Highway Administration (FHWA) Highways for LIFE initiative, a Federal grant of $3,000,000 was awarded to the Hawaii Department of Transportation (DOT) to demonstrate the use of a proven, innovative precast concrete pavement (PCP) system in conjunction with traditional pavement restoration and concrete overlay on an importan
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Open-graded aggregates are common in road and bridge construction because they are easy to place, and they have the advantages of very low fine content, free-draining characteristics, low frost heave potential, and simple quality assurance testing. They are a suitable alternative to well-graded aggregate blends in many applications. Another key ben
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The Federal Highway Administration organized a pooled fund study of 38 States to evaluate low-cost safety strategies as part of its strategic highway safety effort. One of the strategies selected for evaluation was the combined application of centerline and shoulder rumble strips. This strategy is intended to reduce the frequency of crashes by aler
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The purpose of this tech brief is to provide pavement engineers with information to help them specify and choose materials that will last for the desired lifetime of the pavement. This tech brief focuses on considerations for the cementitious matrix with respect to paste-related distress mechanisms. Aggregate-related mechanisms are discussed in a s
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Transportation agencies have the responsibility and the challenging task to maintain, preserve and improve infrastructure assets for current and future generations. While maintaining existing assets is an overriding concern for transportation agency officials, most agencies are grappling with funding issues. Considering the fact that assets such as
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This report provides a synthesis of recent research focused on longitudinal pavement markings. It offers a review of when and where longitudinal pavement markings are used. It also covers two of the most important parameters in terms of increasing the effectiveness of pavement markings: width and retroreflectivity. These items are within the contro
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This research study was conducted by the Oak Ridge National Laboratory (ORNL) to revise and update the Federal Highway Administration (FHWA) models used in estimating off-highway gasoline consumption. The previous FHWA off-highway motor fuel consumption estimation models contained outdated assumptions and data (mainly from the 2002 Vehicle Inventor
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2015-06-01
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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
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