The production use of precast concrete pavement (PCP) has come a long way over the last 15 years. The technology is gaining wider acceptance in the U.S. for rapid repair and rehabilitation of concrete pavements as well as for heavily trafficked asphalt concrete pavements and intersections. Several U.S. highway agencies have implemented the PCP tech
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The production use of precast concrete pavement (PCP) has come a long way over the last 15 years. The technology is gaining wider acceptance in the U.S. for rapid repair and rehabilitation of concrete pavements as well as for heavily trafficked asphalt concrete pavements and intersections. Several U.S. highway agencies have implemented the PCP tech
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High quality data and reliable analytical methods are the foundation of data-driven decision-making. The Reliability of Safety Management Methods series includes five information guides that identify opportunities to employ more reliable methods to support decisions throughout the roadway safety management process. Four of the guides focus on speci
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Road Safety Audits (RSAs) are a formal safety performance examination of an existing or future roadway or off-road facility and are conducted by an independent, experienced, multidisciplinary team. This case study document provides a review of the RSA process and four case study examples of RSAs that had a demonstrated interest in improving transit
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The Arizona Department of Transportation (ADOT) and the Federal Highway Administration (FHWA) Office of Safety completed a pilot project that allows the State to acquire roadway data elements from local and Tribal agencies and load the data into the Arizona Transportation Information System (ATIS) database. ADOT created a new process that allowed b
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This edition of the Traffic Monitoring Guide (TMG) is intended to provide the most up to date guidance to State highway agencies about the policies, standards, procedures, and equipment typically used in a traffic monitoring program. The TMG presents recommendations to help improve and advance current programs with a view toward the future of traff
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Current design of reinforced soil structures in the U.S. distinguishes between slopes and walls using the batter angle as a criterion. Using a unified approach in limit state design of reinforced ‘walls’ and ‘slopes’ should diminish confusion while enabling a wide and consistent usage in solving geotechnical problems such as complex geometries and
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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.
Post-Deployment Analysis, Modeling, and Simulation (AMS) activities focus on identifying impacts and benefits of the “as-deployed” Integrated Corridor Management (ICM) system. The “as-deployed” ICM strategies may differ from “as-planned” ICM strategies. The differences could include ICM strategies that are not successfully deployed, ICM strategies
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Post-Deployment Analysis, Modeling, and Simulation (AMS) activities focus on identifying impacts and benefits of the “as-deployed” Integrated Corridor Management (ICM) system. The “as-deployed” ICM strategies may differ from “as-planned” ICM strategies. The differences could include ICM strategies that are not successfully deployed, ICM strategies
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The primary objective of this project is to develop multiple simulation testbeds/transportation models to evaluate the impacts of DMA connected vehicle applications and the active and dynamic transportation management (ATDM) strategies. The outputs (modeling results) from this project will help USDOT prioritize their investment decisions for DMA an
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The primary objective of this project is to develop multiple simulation Testbeds/transportation models to evaluate the impacts of DMA connected vehicle applications and the active and dynamic transportation management (ATDM) strategies. The outputs (modeling results) from this project will help USDOT prioritize their investment decisions for DMA an
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The primary objective of this project is to develop multiple simulation Testbeds/transportation models toevaluate the impacts of DMA connected vehicle applications and the active and dynamic transportationmanagement (ATDM) strategies. The outputs (modeling results) from this project will help USDOT prioritizetheir investment decisions for DMA and A
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The pavement remaining service interval (RSI) terminology was developed to remove confusion caused by the multitude of meanings assigned to the various forms of pavement remaining service life (RSL). The RSI concept considers the complete maintenance and rehabilitation (M&R) activity of the pavement system and does not simply consider the end of li
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A dataset of 594 bridge pier scour observations from two laboratory and three field studies was compiled. The dataset served as the testing ground for evaluating potential enhancements to the pier scour tools for noncohesive soils in Hydraulic Engineering Circular 18 (HEC-18). In the current (fifth) edition of HEC-18, there are two primary equation
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This document is a technical summary of the Federal Highway Administration (FHWA) report, "Application and Validation of RSI Framework to Pavements" (FHWA-HRT-16-053). The goal of this project was to demonstrate and to validate the application of the pavement remaining service interval (RSI) concept with real data. This TechBrief first describes th
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2016-10-01
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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 Federal Highway Administration's (FHWA's) Fostering Multimodal Connectivity Newsletter is intended to provide transportation professionals with real-world examples of ways that multimodal transportation investments promote economic revitalization, provide access to jobs, and achieve safer communities through support of accelerated project deliv
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FHWA, in cooperation with Transport Canada and the Mexican Secretariat of Transportation and Communications, developed U.S.-Canada and U.S.-Mexico projections of future freight and passenger volumes over the next 30 years (2015 – 2045) from a North American framework and a regional border perspective. The study developed national macro-level data p
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