This document is one in a series of technical summaries that accompany the forthcoming Federal Highway Administration report, Collection of Data with Unmanned Aerial Systems (UAS) for Bridge Inspection and Construction Inspection.
This case study presents a safety analysis conducted by the Wisconsin Department of Transportation (WisDOT) at the intersection of State Highway 75 (WIS 75) and Plank Road (County Road A) in Racine County, WI. WisDOT proactively identified key safety needs early in the project development process and used a data-driven approach to evaluate the safe
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This report summarizes proceedings of a virtual peer exchange sponsored by the Federal Highway Administration (FHWA) and hosted by the Association of Metropolitan Planning Organizations (AMPO) on June 22–23, 2021. The purpose of the peer exchange was to discuss how metropolitan planning organizations (MPOs) can build MPO capacity for using geograph
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United States. Department of Transportation. Federal Highway Administration
2021-09-01
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Although several factors can influence the performance of an asphalt pavement, one of the most important is in-place density. A small increase in density can potentially lead to a significant increase in service life of asphalt. Highway agencies use specifications to achieve acceptable in-place density on their asphalt pavements. Density acceptance
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This technical manual describes the Federal Highway Administration’s Traffic Noise Model (TNM) Version 3.1. Chapter 2 describes the process of determining noise emissions and levels at a reference location 15 m (50 ft) from the traffic noise source. This includes: the geometric discretizing of the study in the horizontal plane into elemental triang
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CARMASM is an initiative to enable collaboration for research and development of cooperative driving automation (CDA). The goal of CDA is to improve safety, traffic throughput, and energy efficiency of the transportation network by enabling vehicles and the infrastructure to communicate to coordinate movement. This project aims to advance the CARMA
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Cooperative driving automation (CDA) aims to improve the safety, traffic throughput, and energy efficiency of the transportation network by allowing vehicles and infrastructure to work together to coordinate movement. The objective of this project is to advance the CARMASM ecosystem to enable further capabilities for CDA participants to interact wi
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Connected and automated vehicle (CAV) technologies offer potentially transformative societal impacts, including significant mobility, safety, and environmental benefits. Traffic analysis, modeling, and simulation (AMS) tools provide an efficient means to evaluate transportation improvement projects before deployment. However, current AMS tools are
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The use of passive data from location-based smartphone applications (LBS) and Global Positioning Services (GPS) to collect Annual Average Daily Traffic (AADT) has the potential to greatly reduce costs to State Department of Transportations (DOTs) and Metropolitan Planning Organizations (MPOs) and expand the coverage of up-to-date counts. This repor
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The use of passive data from location-based smartphone applications (LBS) and Global Positioning Services (GPS) to collect Annual Average Daily Traffic (AADT) has the potential to greatly reduce costs to State Department of Transportations (DOTs) and Metropolitan Planning Organizations (MPOs) and expand the coverage of up-to-date counts. This repor
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CARMA℠: Boosting Safety, Efficiency, and Reliability on the Nation’s Highways; Nature-Based Solutions for Coastal Highway Resilience; Confronting the Storm: Arizona’s Innovative Dust Detection and Warning System; Safety on Ice; Bolstering the Safety of America’s Bridges for Half a Century; Rehabilitating the Historic Arlington Memorial Bridge.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2021-09-01
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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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Every Day Counts (EDC) is the Federal Highway Administration’s (FHWA’s) program to advance a culture of innovation in the transportation community in partnership with public and private stakeholders. Through this State-based effort, FHWA coordinates rapid deployment of proven strategies and technologies to shorten the project delivery process, enha
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This brief summarizes an evaluation of how the Federal Highway Administration’s (FHWA’s) investment in eNEPA, an electronic tool, has affected interagency collaboration in developing environmental documents and conducting environmental reviews for major projects under the National Environmental Policy Act (NEPA).
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-01
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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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This TechBrief summarizes the planning, conduct, and outcomes of the Federal Highway Administration’s (FHWA’s) Long-Term Pavement Performance (LTPP) program Data Analysis Workshop. FHWA conducted a multiday virtual workshop in November 2020 to gather input from subject matter experts to update the LTPP Data Analysis Plan. Formerly known as the Stra
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This Technical Brief provides an overview of the binder parameter Delta Tc (ΔTc). Delta Tc is an indicator of the effect of aging and additives on the asphalt rheology. More specifically, ΔTc provides insight into the relaxation properties of an asphalt binder that can contribute to non-load related cracking or other age-related embrittlement distr
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The Federal Highway Administration and Traffic Analysis and Simulation Pooled Fund Study sponsored a research project on multiresolution modeling (MRM). The project's goal was to develop consistent definitions and a unified modeling framework for transportation professionals to help them better understand the opportunities and challenges associated
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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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This report presents a summary of the 2020 Traffic Incident Management Capability Maturity Self-Assessments (TIM CM SA) completed by transportation personnel from 99 locations across the country between September and December, 2020. Forty-one scored questions in the TIM CM SA are grouped into three sections: Strategic, Tactical, and Support. The TI
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