The Infrastructure Investment and Jobs Act (IIJA) (Pub. L. 117-58, also known as the "Bipartisan Infrastructure Law" (BIL)), was signed into law on November 15, 2021. Among other things, the BIL established a new Special Rule under the Highway Safety Improvement Program (HSIP) for vulnerable road user (VRU) safety and continued the two existing spe
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A new file format to save site model information was introduced in version 3.0 of the Federal Highway Administration’s Traffic Noise Model (FHWA’s TNM). This file format is based on the XML markup language and includes a series of tags to represent objects and their parameters in the site model. In TNM 3.1, the file format was extended to include c
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The Strategic Highway Safety Plan (SHSP) is a critical part of the Federal Highway Safety Improvement Program (HSIP). As part of the SHSP process, States are encouraged to take a broad view of safety needs and identify over-arching emphasis areas (EAs). This case study presents a safety analysis and technology improvement project conducted by the M
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The Federal Highway Administration’s (FHWA) Office of Operations has actively engaged in the national deployment of Traffic Incident Management (TIM) programs since the office was deployed. Public agencies are increasingly using Unmanned Aircraft Systems (UAS) for a variety of purposes and are developing sections to coordinate UAS use. Several Law
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This case study describes the Minnesota Department of Transportation’s (MnDOT's) use of the Enhanced Interchange Safety Analysis Tool (ISATe) as a part of a planning study for an approximately 7-mile segment of Interstate 35 (I-35) in Carlton County. I-35 carries commuter and recreational traffic, and it is a main freight corridor for the area. Mos
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Traffic incident detection is a crucial task in traffic management centers (TMCs) that typically manage large highway networks with limited staff. An effective automatic incident-detection approach could benefit TMCs by helping to report abnormal events in a timely and accurate manner and optimize operating resources. During the past decades, resea
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The United States Department of Transportation Federal Highway Administration has initiated the CARMASM program to advance research and development of cooperative driving automation (CDA) to accelerate market readiness and deployment. CDA aims to improve the safety, traffic throughput, and energy efficiency of the transportation network by allowing
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This document is a technical summary of the Federal Highway Administration report, Comparative Effectiveness of Alternative Smartphone-Based Nudges to Reduce Cellphone Use While Driving: Final Report (FHWA-HRT-22-057).
This report is part of the Human Factors for Connected Vehicles (HFCV) program, whose goal is to minimize driver workload by eliminating connected vehicle (CV) device-related distractions. The research described in this document is part of an effort to develop initial design considerations for vehicle-to-pedestrian (V2P) safety messages provided to
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United States. Federal Highway Administration. Office of International Programs
2022-02-01
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The Office of International Programs works to discover, share, and promote global best practices and new technologies that improve the safety and efficiency of highway infrastructure. Our understanding of cultural and political nuances and differences between nations and our expertise in managing global relationships foster a culture of collaborati
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United States. Department of Transportation. Federal Highway Administration
2022-02-01
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The BIL continues to allocate funds for a highway program in the Commonwealth of Puerto Rico. It also continues to allocate funds to assist the governments of the U.S. territories (American Samoa, the Commonwealth of the Northern Mariana Islands, Guam, and the U.S. Virgin Islands) in constructing and improving a system of arterial and collector hig
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The objective of this document is to provide a rationale for conducting risk assessment of Post-Tensioning (PT) tendons to aid designers in the selection of appropriate corrosion protection strategies for PT systems in bridges. The risk assessment is intended to prioritize the need for protective technologies and processes considering the likelihoo
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This research summary report describes research carried out to develop an integrated survey methodology and instrument to support the collection of freight movement data. The researchers leveraged the Future Mobility Sensing (FMS) framework, which combines tracking and sensing data with machine-learning algorithms on the back end and user participa
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Since 2006, the Federal Highway Administration (FHWA) Road Weather Management Program (RWMP) has conducted a periodic assessment of program effectiveness in improving the performance of the transportation system during adverse weather conditions. The RWMP assessments of program performance were conducted and documented in 2009, 2012, 2015, 2017, an
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The purpose of this Tech Brief is to describe the use of recycled concrete aggregate (RCA) in concrete paving mixtures and identify considerations for its use in highway infrastructure. The document is intended for highway agency and contractor engineers.
This case study presents a safety analysis performed by the Texas Department of Transportation (TxDOT) for an Interstate Access Justification Report. The Interstate 37 (I-37) corridor is an important freight route, critical hurricane evacuation linkage, and the only crossing of the Nueces River within 25 miles. This corridor is part of the National
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Partial-depth precast concrete deck panels (PDDPs) are relatively thin precast prestressed concrete panels that span between girders which combine to act compositely with a cast-in-place (CIP) concrete topping to provide the full structural thickness of a bridge deck. PDDPs may have some advantages including faster and safer construction, ease of d
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The Federal Highway Administration (FHWA) and Traffic Analysis and Simulation Pooled Fund Study sponsored a research project on multiresolution modeling (MRM). The project intends to develop consistent definitions and a unified modeling framework for transportation professionals to help them better understand the opportunities and challenges associ
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United States. Department of Transportation. Federal Highway Administration
2022-02-01
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The BIL establishes a National Electric Vehicle Infrastructure Formula Program ("NEVI Formula") to provide funding to States to strategically deploy electric vehicle (EV) charging infrastructure and to establish an interconnected network to facilitate data collection, access, and reliability.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2022-02-01
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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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