This synthesis report provides a review of the state of the practice of road safety audit (RSA) and road safety audit review (RSAR) applications for U.S. states and Canadian provinces. Transportation safety professionals with these agencies and with local and re-gional entities, as well as others in both the public and private sectors, may be interested in this documentation of international, state, and some local agency approaches to the use of these tools in comprehensive safety programs. This synthesis of the Transportation Research Board places emphasis on North American applications. However, this document also dis-cusses international practice as RSAs were first introduced in the United Kingdom more than 20 years ago, and RSAs have been extensively applied in New Zealand and Austra-lia since the 1990s. This document promotes the use of RSAs and RSARs. The increased use of these applications may help reduce roadway crashes and fatalities. For this synthesis report of the Transportation Research Board survey responses were received from 38 state departments of transportation (DOTs) and 6 Canadian provinces. The state of the practice was developed based on this 2003 survey, state, and local agency practices, Federal Highway Administration- and National Highway Institute-sponsored training for state DOTs, local agency training experiences, international prac-tices, literature, and personal contacts. A panel of experts in the subject area guided the work of organizing and evaluating the collected data and reviewed the final synthesis report. A consultant was engaged to collect and synthesize the information and to write this report. Both the consultant and the members of the oversight panel are acknowledged on the title page. This synthesis is an immediately useful document that records the practices that were acceptable within the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand. (Author/publisher) This report may be accessed by Internet users at http://www.trb.org/publications/nchrp/nchrp_syn_336.pdf
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