In light of the growth in available weather and road condition information, the Federal Highway Administration (FHWA) has created guidelines for communicating road weather information so that travelers can access the information in a way that is most useful and convenient for them.
This
In order to reduce the impact of weather on transportation systems, the Federal Highway Administration's Road Weather Management Program is assisting agencies in incorporating weather information and technologies into their Transportation Management Center (TMC) operations. This document is a sel
This report contains an overview of weather-responsive traffic management practices. It details what these strategies are, where they have been used, what benefits have come from their use, what can be done to improve them, and how to evaluate them as transportation operations. This report also c
This document is an updated version of the initial Guidelines, published in 2007 (FHWA-HOP-05-026). The majority of the document remains the same, with a few minor adjustments throughout the Guidelines. The one major change made was that of an updated data table, which now includes a standard set
The Manual on Uniform Traffic Control Devices (MUTCD) is a compilation of national standards for all traffic control devices. It is used by road managers to install and maintain the correct traffic control devices on all public streets, highways, bikeways, and private roads open to public travel.
The Standard Highway Signs is a compilation of the signs used in transportation in accordance with the Manual on Uniform Traffic Control Devices (MUTCD). This document is a supplement to the 2004 edition of the Standard Highway Signs (for use with the 2003 MUTCD). The 2012 supplement was dev
Highway sponsorship helps provide the public with an improved transportation system through the financial contributions of the sponsors. The additional revenue aids in finding services to make it possible to improve the safety and efficiency of highways across the Nation.
Thi
The purpose of this practice is to keep state highway departments and transportation agencies up-to-date on the laws and legal elements that will affect their operations. Specifically, this addresses 3 main issues: the effect of the Manual on Uniform Traffic Control Devices (MUTCD) on the de
The 2014 National Strategy for Transportation Security (NSTS) addresses the security of transportation in the United States. This report to Congress outlines a plan to protect and facilitate the ability of both people and goods to be moved in the safest ways possible, while ensuring and protectin
Intersection crashes are a significant contributor to the number of transportation fatalities and serious injuries across the country. In recent years, multiple intersection conflict warning systems (ICWS) have been developed and used in many different states and locations, without sufficient gui
The public response to Dynamic Message Signs (DMS) and traffic flow maps (via internet) has overall been a very positive one, but there is not much sufficient research to show what affect these tools have on traffic itself. To determine the impact on travel times, on-line surveys were created to
Caltrans Strategic Management Plan
14.05.30 D7 Final Report Organizing of District 7 Traffic Operations
Private vendors sell and provide third party data for a variety of transportation purposes, including commercial freight, personal navigation, data to benefit transportation companies, and more. This data can be helpful for a multitude of reasons, including maintaining safety and mobility of the
This document is a summary of the activities completed in order to develop warrants for Intelligent Transportation System (ITS) devices, including Closed Circuit Television, Dynamic Message Signs, Highway Advisory Radio, Road Weather Information Systems, Variable Speed Limit Signs, Dynamic Speed
The goal of this project was to explore the use and impacts of camera images and other displays of information that were "unverified", especially when compared to "verified" reports, such as traffic maps, incident reports, and other sources of information. The results of this project could help a
This project is a continuation of the previous "Developing Consistency in ITS Safety Solutions -- Intersection Conflict Warning Systems (Phase 1)". This project included a few national entities, such as AASHTO Subcommittee on Traffic Engineering, the National Committee on Uniform Traffic Control
Due to the nature of today's technology, including information platforms like social media, it is increasingly difficult to plan, evaluate, operate, and enhance traveler information services because of limited resources, huge amounts of information and data, and rapidly changing dynamics. The pur
Intelligent Transportation System (ITS) devices include a variety of traffic control device displays that are required to be within the roadway clear zone. These devices are required to be crashworthy. Agencies planning to utilize ITS devices within the clear zone must ensure that they are crashw
Highway Advisory Radio (HAR) had been in use since the 1970s as a tool for government organizations to report public information via radio. HAR is most often used by departments of transportation, to report about road conditions, construction, and other traffic conditions.
The purpose o
Sam Schwartz Engineering and TransSafe (the “consulting team”) were engaged by the City of Seattle in May 2015 to review national best practices in Traffic Incident Management (TIM), evaluate the state of TIM in the City, and make recommendations for improvements to Seattle’s TIM procedures. The
Sam Schwartz Engineering and TransSafe (the “consulting team”) engaged in a review of relevant standards on Traffic Incident Management (TIM) through manuals, presentations, and other materials produced by federal government sources along with documents from states and cities across the United St
In the late 1990s, ENTERPRISE worked with General Motors' OnStar to research how automatic collision notification (ACN) technology could improve road safety and traveler information if emergency medical staff and transportation agencies could access the data from said systems. Since then, OnStar
In this project, the benefits regarding the following Intelligent Work Zone (IWZ) technologies were researched: queue warning systems, dynamic merge systems, alternate routes and variable speed limits in work zones. Details about recent related deployments of IWZ technologies were reported, as we
The goal of this project was to document the potential for Video Analytics to be used by traffic operations centers (TOCs) and for traffic data collection. Video Analytics Systems in Iowa, Missouri, and Ontario were tested and evaluated. The components included: Traffic Data Collection (comparing
