North Carolina is one of a small number of States that have actively pursued developing their own crash modification factor (CMF) "short list" for countermeasures that are deployed throughout the State. The North Carolina Department of Transportation (NCDOT) wanted to develop a list of CMFs to use in benefit cost analyses across the State. To devel
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Pennsylvania Department of Transportation (PennDOT) used Part C of the Highway Safety Manual (HSM) to develop State-specific safety performance functions (SPFs). For some facility types, PennDOT calibrated the SPFs at the district or regional level within the State. PennDOT believes that pre-selecting applicable CMFS, and developing State-specific
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This TechBrief describes research on the development of an open source microscopic traffic simulation software with proven traffic models, advanced computing algorithms, and a distributed/cross platform application programming interface. The research was conducted between 2008 and 2017. The ETFOMM (Enhanced Transportation Flow Open-source Microscop
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2016-11-03
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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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Development of State Highway-railway Grade Crossing Action Plans (State Action Plans (SAPs)) were initially required by Section 202 of the Rail Safety Improvement Act of 2008 (RSIA08), Public Law 110- 432, Division A, for the 10 States identified with the highest number of highway-railway grade crossing collisions over a specific 3-year period. The
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FHWA and the U.S. Department of Transportation (USDOT) Volpe Center are developing a work zone car-following model and simulation software that interfaces with existing microsimulation tools, enabling more accurate simulation of car-following through freeway work zones. The purpose of this project is to provide engineers and planners at transportat
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The objective of this project was to develop practical methods for prioritizing and mitigating traffic bottlenecks, which are one of the top causes of surface transportation congestion in the United States. Through this project, the following were developed: a new approach for ranking traffic bottlenecks, a new playbook of 70 bottleneck mitigation
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Characterization of subsurface conditions is one of the most challenging yet important activities required for successful planning, design, construction, and operation of transportation infrastructure. This manual is intended to provide a technical resource for geotechnical and highway engineers responsible for planning and performing subsurface in
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The purpose of this guide is to make it easier for users to understand how the Traffic Monitoring Guide (TMG) format describes the information that should be collected when counting multimodal users, as well as how to format that information correctly. Successfully encoding count data in the TMG format is very important for obtaining the greatest v
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2016-11-01
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Public Roads
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Public Roads is the quarterly magazine of the Federal Highway Administration (FHWA). Reading Public Roads is the easiest way to keep up-to-date on developments in federal highway policies, programs, and research and technology. More specifically, the magazine "covers" advances and innovations in highway/traffic research and technology, critical nat
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2016-11-01
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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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United States. Federal Highway Administration. Office of Environmental Policy
2016-11-01
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It is important to understand the contribution of noise sources other than the highway in order to determine the total noise exposure in an area, for both "existing" and "after" conditions. This understanding permits an estimate of the relative impact of highway noise, and also permits one to evaluate the benefits of highway noise control actions.
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This TechBrief describes research on modernized congestion identification and cost-effective mitigation strategies that are not dependent on advanced vehicle technology. The research was conducted between 2013 and 2016
The 1998 Transportation Equity Act for the 21st Century (TEA 21) included safety as a priority planning factor in the transportation planning process. The legislation provides an opportunity to identify effective safety strategies and to integrate these strategies into all phases of the performance-based transportation planning processes. An explic
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With almost 20,000 lane miles on the Oregon highway system, the Oregon Department of Transportation (ODOT) is responsible for managing and maintaining its roadway assets. Managed assets include barriers, traffic signals, lighting, pavement markings, and signs. ODOT has developed an inventory of its assets and evaluates asset condition in order to e
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This document is intended to help users identify and apply suitable methods to assess quantitatively the safety performance impacts of project development decisions in terms of crash frequency and severity.This Guide suggests safety assessment methods that may be suitable for answering safety performance related questions that typically arise durin
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This report provides local and state agencies with tools to develop policies that support the development of safe and complete bicycle and pedestrian networks for users of all ages and abilities. The guide is accompanied by case studies that showcase examples from across the country of how policies can support safe and complete street networks.
In Washington State, the traffic fatality rate for Native Americans is 3.5 times higher than the rest of the population. Tribal and State agencies have recognized the need for improved data in order to accurately identify and address Tribal transportation safety challenges. In 2007, the Washington State developed the eTRIP/SECTOR software program t
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2016-11-01
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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.
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