Unsignalized Intersection Improvement Guide

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Abstract:

The Intersections Joint Subcommittee has an online manual that provides state of the art guidance on unsignalized intersections.

www.ite.org/uiig

From 2010 to 2012, there were nearly 21,000 fatal crashes occurring at or related to intersections across the United States. Of those, more than 15,000—more than 70 percent—occurred at intersections that are not under the control of a traffic signal.1 The majority of these unsignalized intersections are owned and operated by local agencies, many of which do not have professional traffic engineers on staff. This Unsignalized Intersection Improvement Guide (UIIG) has been developed to assist practitioners at such agencies in selecting design, operational, maintenance, enforcement, and other types of treatments to improve safety, mobility, and accessibility at unsignalized intersections. Originally produced under Project No. 03-104 of the National Cooperative Highway Research Program, the web-based UIIG is now hosted by the Institute of Transportation Engineers (ITE) under the sponsorship of the Federal Highway Administration (FHWA) Office of Safety.

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