This report is focused on predicting and quantifying curling and warping of jointed portland cement concrete pavements. Researchers used the comprehensive research-quality datasets available through the Long-Term Pavement Performance (LTPP) program, supplemented by additional datasets collected by other Federal Highway Administration studies. The a
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United States. Department of Transportation. Federal Highway Administration
2023-04-01
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PDF
This fact sheet provides information regarding the Transportation Pooled Fund (TPF) Excellence Award Program. For more than 45 years, the Federal Highway Administration’s (FHWA) TPF Program has enabled public and private entities to collaboratively conduct cutting-edge transportation research. Through the TPF Program, participants are able to pool
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This handbook is designed to help transportation practitioners incorporate natural hazard resilience into asset management. Upfront, it summarizes who to include in this planning process and how different groups (e.g., asset management, environment) can work together on this topic. The handbook then explains how to develop a baseline understanding
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Transportation agencies regularly consider trade-offs between investment options to address competing priorities with limited resources. Inadequate funding for all needed transportation improvements forces agencies to make difficult decisions across asset classes, such as mobility improvements versus preservation or on-going maintenance versus syst
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Six States from the Southeastern U.S. gathered for a peer exchange and discussion on implementation activities to support Balanced Mix Design (BMD). The peer exchange was sponsored by the Federal Highway Administration (FHWA). The six States met to assess the state-of-practice for the technology, tools, and techniques in designing, verifying, and a
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This study evaluated the safety effectiveness of mini-roundabout (MR) installations at two-way stop-controlled (TWSC) and all-way stop-controlled (AWSC) locations. Based on a longitudinal design including comparison sites, the database included three States: Washington, Michigan, and Maryland. Safety data were compiled for locations of known MR ins
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A programmatic approach to traffic control systems management and operations strategically links business processes, workforce, systems and technology, and management decisions to objectives that are consistent with the goals of the organization. The purpose of this handbook is to advance the use of objectives and performance-based approaches to tr
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United States. Department of Transportation. Federal Highway Administration
2023-04-01
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PDF
For nearly a quarter of a century, National Work Zone Awareness Week (NWZAW) has been spotlighting critical safety and mobility issues in and around work zones. Every spring, the Federal Highway Administration and its stakeholders sponsor activities to bring nationwide attention to this important topic. Work zones are critical for upgrading and mai
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United States. Department of Transportation. Federal Highway Administration
2023-04-01
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PDF
This report explains how the traffic management systems (TMSs) are complex operational systems. TMSs enable human operators to facilitate improvements in the efficiency, safety, and predictability of travel on the surface transportation system. TMSs combine field equipment, information technology and communications, software, and other tools to col
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-04-01
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PDF
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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John A. Volpe National Transportation Systems Center (U.S.)
2023-04-01
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PDF
Geographic Information Systems (GIS) are an effective and increasingly essential tool at State Departments of Transportation (DOTs). With applications in all aspects of their work, GIS has helped State DOTs make better transportation decisions that are more informed and delivered in a cost-efficient, timely manner. While State DOTs have been using
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Documentation of potential safety performance impacts is required for Interchange Justification Reports (IJRs) to validate the need for new or modified interchanges.(2) Typically, IJRs are written early in the project planning and design process, with details generally consistent with conceptual design. As such, the design details required for usin
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This analysis tested the sensitivity of the latest version of the U.S. Environmental Protection Agency’s Motor Vehicle Emissions Simulator (MOVES), MOVES3, to various inputs. The analysis focuses on the following county level inputs: hotelling, off-network idle (ONI), average speed distribution, and age distribution as well as additional specific i
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The percentage of pavements and bridges in Fair condition represents a significant portion of the nation’s inventory. This document summarizes points raised during virtual meetings conducted by the Federal Highway Administration's (FHWA’s) Transportation Asset Management Expert Task Group (TAM ETG) during calendar year 2021. These discussions addre
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-03-31
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PDF
The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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United States. Department of Transportation. Federal Highway Administration
2023-03-28
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PDF
The pedestrian hybrid beacon (PHB) is a traffic control device designed to help pedestrians safely cross higher-speed roadways at midblock crossings and uncontrolled intersections. The beacon head consists of two red lenses above a single yellow lens. The lenses remain “dark” until a pedestrian desiring to cross the street pushes the call button to
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-03-26
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PDF
The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-03-24
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PDF
The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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The purpose of this document is to summarize for the United States Department of Transportation’s (U.S. DOT’s) Intelligent Transportation Systems Joint Program Office (ITS JPO), the potential blockchain applications in ITS categorized based on Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) taxonomy. The applications
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United States. Department of Transportation. Federal Highway Administration. Office of Tribal Transportation
2023-03-17
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PDF
The fundamental purpose of this document is to provide guidance to eligible Tribes entering into, or already having, a TTPA with FWHA. The Tribal Transportation Program Delivery Guide clarifies the terms, roles and responsibilities, and provisions for the Tribes and FHWA as outlined in the TTPA. It assists Tribal governments in the administration o
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