This document serves as a participant workbook for Web-Based Training for FHWA Roadway Lighting Workshop, Module 1: Roadway Lighting Design Overview. Module 1 covers lighting terminology, the purposes of roadway lighting, warrants for roadway lighting, and lighting guideline documents. Other modules include Module 2: Lighting Hardware and Light Sou
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To explore how State DOTs evaluate geospatial tool applications and services within their own agencies, particularly their efforts using capability maturity models (CMMS) such as the Slimgim-T CMM, FHWA and the U.S. Department of Transportation (DOT) Volpe National Transportation Systems Center interviewed four State DOTs and developed a series of
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This project aims to develop a mobile app that enables pedestrians with disabilities to more safely and more efficiently cross signalized intersections. The proposed technology concept is a smart phone app that interacts directly with a real-time, adaptive traffic signal control system at the intersection via Dedicated Short Range Communication (DS
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This document serves as a participant workbook for Web-Based Training for FHWA Roadway Lighting Workshop, Module 4: Other Roadway Lighting Topics. Module 4 covers locations for lighting equipment, lighting for special locations, and the spectral effects of light. Other modules include Module 1: Roadway Lighting Design Overview, Module 2: Lighting H
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The Development of Crash Modification Factors program conducted safety evaluations of multiple strategies at signalized intersections for the Evaluation of Low Cost Safety Improvements Pooled Fund Study. This study evaluated multiple low-cost treatments at signalized intersections. Improvements included basic signing, pavement marking, and signal e
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2018-05-01
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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 Pathfinder initiative, supported by the Federal Highway Administration (FHWA) and the National Oceanic and Atmospheric Administration’s (NOAA’s) National Weather Service (NWS), facilitates collaborative partnerships between the NWS, State Departments of Transportation (DOT), and private sector Weather Service Providers (WSP) that support DOTs.
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The purpose of this study was to develop recommendations for signing, delineation, and geometric design that will reduce workloads at critical points approaching interchanges that exhibit a high degree of complexity. In the development of these recommendations, the following activities were completed: identification of attributes influencing interc
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Model Systems Engineering Documents for Closed Circuit Television (CCTV) Systems is intended to provide guidance for professionals involved in developing systems engineering documents covering the evaluation, selection and implementation of CCTV systems.
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 using the authority provided by the
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The module estimates emission reductions for retrofitting diesel6 transit buses of a given model year with a specified retrofit technology. Emission reductions are estimated by calculating the reduction in running, start, and crankcase emissions from pre- to post-retrofit based on the pollutant and technology. This document is organized into three
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2018-05-01
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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.
John A. Volpe National Transportation Systems Center (U.S.)
2018-05-01
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This primer is designed to serve as a resource for freight stakeholders seeking to improve urban freight management in their regions. Urban freight management refers to planning, programming, and other efforts to improve freight mobility in urban areas or to minimize its impacts on others. Operations, logistics, and technology strategies represent
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This TechBrief presents an analytical procedure by which asphalt binders can be analyzed for their content of Recycled Engine Oil Bottoms (REOB) in field locations using handheld battery-operated x-ray fluorescence (XRF) spectrometers.
Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
Based on bridge failure data compiled by the New York State Department of Transportation, collision, both caused by vessels and vehicles, is the second leading cause of bridge failures after hydraulic. The current AASHTO-LRFD (2012) specification recommends designing a bridge pier vulnerable to vehicular impacts for an equivalent static force of 60
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2018-05-01
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PDF
FHWA has constructed a national vehicle miles traveled (VMT) forecasting model where future VMT growth rates can be estimated for three major economic scenarios - normal, pessimistic, and optimistic growth. The normal growth scenario represents the most Likely economic outlook reflects IHS' assessment of most probable future trends in U.S. populati
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This Comprehensive Operations and Maintenance Plan (CMOP) covers planning for the operations and maintenance of all in-vehicle, roadside, mobile device, center, and other equipment and supporting capabilities required in the deployed system. The CMOP also identifies the types and number of equipment required to be maintained and summarizes key oper
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2018-05-01
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The asphalt binder oxidative aging chemomechanical model provides a significant improvement in the understanding of asphalt binder oxidation chemistry. It offers a more consistent mathematical description of the oxidation process and provides evidence that greatly simplified testing methods can be developed to describe the oxidation behavior of asp
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