United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2012-06-01
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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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Reactive Solutions is a quarterly newsletter developed under FHWA's ASR Development and Deployment Program. Reactive Solutions will share developments of the Program, share what other States and agencies are doing to address ASR, and provide tools and information for readers to address ASR.
Four-lane divided highways are an economical design solution to increase the capacity of rural highways compared to grade-separated limited access facilities. Compared to two-lane undivided rural highways, four-lane divided highways have markedly lower rates of sideswipe, rear-end, and head-on collisions. However, right-angle crash rates are marked
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United States. Federal Highway Administration. Office of Research, Development, and Technology
2012-06-01
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This document is a technical summary of the Federal Highway Administration (FHWA)report, "Relating Ride Quality and Structural Adequacy for Pavement Rehabilitation/Design Decisions" (FHWA-HRT-12-035). This TechBrief discusses the relationship between pavement ride quality and structural adequacy. It presents highlights from a literature search and
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The volume of freight moved in the United States has more than tripled over the past 25 years and will continue to rise, according to the American Association of Port Authorities and the American Association of Railroads. Reducing freight and general traffic congestion is the goal of “Advanced Integration of Private Sector Freight Information with
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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. Federal Highway Administration. Office of Corporate Research, Technology, and Innovation Management
2012-06-01
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Focus (ISSN 1060-6637), which is published monthly by the U.S. Department of Transportation’s Federal Highway Administration (FHWA), covers the implementation of innovative technologies in all areas of infrastructure. Its primary mission is twofold: (1) to serve the providers of highway infrastructure with innovations and support to improve the qua
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2012-06-01
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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 objective of the project is to develop a framework and procedures for implementing and evaluating weather-responsive traffic management (WRTM) strategies using Traffic Estimation and Prediction System (TrEPS) methodologies. In a previous FHWA-funded project, a methodology was developed and tested for incorporating weather impacts in off-line Tr
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This report concentrates on a velocity advisory tool, or decision support system, for vehicles approaching an intersection using communication capabilities between the infrastructure and vehicles. The system uses available signal change information, vehicle characteristics, lead vehicle characteristics, and intersection features to compute the fuel
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Heavy-duty trucks (HDTs) play a significant role in the freight transportation sector in the U.S. However, they consume a vast amount of fuel and are a significant source of both greenhouse gas and criteria pollutant emissions. In order to properly design strategies to reduce energy and environmental impacts of HDTs, accurate data of their fuel con
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This manual outlines the state-of-the-art and recommended practice for designing and constructing Geosynthetic Reinforced Soil (GRS) technology for the application of the Integrated Bridge System (IBS). The procedures presented in this manual are based on 40 years of State and Federal research focused on GRS technology as applied to abutments and w
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The purpose of this project is to develop for the Intelligent Network Flow Optimization (INFLO), which is one collection (or bundle) of high-priority transformative applications identified by the United States Department of Transportation (USDOT) Mobility Program for development in 2011, the following: Concept of Operations (ConOps), Functional req
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On average, there are over 6,301,000 vehicle crashes each year. Twenty-four (24) percent of these crashes – approximately 1,511,000 – are weather-related, resulting in 7,130 fatalities and 629,000 injuries. In spite of these statistics, there is a perception that transportation managers can do little about weather. However, three types of mitigatio
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The purpose of these step-by-step guidelines is to assist in planning, designing, and deploying a system that uses radio frequency identification (RFID) technology to measure the time needed for commercial vehicles to complete the northbound border crossing process at the U.S.–Mexico border (i.e., crossing time) as well as time needed to reach the
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The purpose of this guidebook is to describe to local, regional, and State agencies how to analyze and disseminate data collected by a radio frequency identification (RFID)-based system to measure travel times of commercial vehicles, which is referred to in this document as the RFID-based border crossing time and wait time measurement system. The g
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This white paper addresses the policy and institutional issues that are associated with the development of an open source applications development portal (OSADP), part of a larger research effort being conducted under the ITS Program’s Dynamic Mobility Applications (DMA) program. It provides the first analysis of the types of policies that are typi
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This exploratory study investigates the potential of developing an Eco-Driving application thatutilizes an eco-cruise control (ECC) system within state-of-the-art car-following models. Theresearch focuses on integrating predictive cruise control and optimal vehicle acceleration anddeceleration controllers within car-following models to minimize veh
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United States. Department of Transportation. Federal Highway Administration. Office of Operations
2012-06-01
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Urban Congestion Report (UCR)
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The Urban Congestion Report (UCR) is produced on a quarterly basis and characterizes the most recent traffic congestion and reliability trends at the national and city level. Each quarterly UCR compares data from the most recent three months to the same three months in the previous year.
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