Work zones present unique traffic operations challenges for everyone involved, the road user, the contractor, and the owner of the road. Presently there are no Canadian guidelines for determining when and how to conduct in-service road safety operational reviews of temporary traffic control (TTC) in work zones. In-service road safety reviews of TTC set-ups do not often have any background collision and operational data to analyze and the actual review must be conducted very quickly. The time required to conduct a safety review on an existing road is often measured in weeks if not months, the time to conduct a safety review of a TTC set-up should be measured in days. This paper reviews the need for a formal procedure for conducting in-service road safety operational reviews of TTC set-ups and discusses the methodology of conducting such reviews. The focus of this paper is to provide information on conducting safety reviews of TTC set-ups in work zones.
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