Crash Experience Warrant for Traffic Signals

TRB's National Cooperative Highway Research Program (NCHRP) Report 491: Crash Experience Warrant for Traffic Signals describes a process for estimating the safety impacts of installing or removing traffic control signals and recommends an improved Crash Experience warrant for the Manual on Uniform Traffic Control Devices (MUTCD). The estimation process can be used during the engineering study to determine if a traffic signal will improve the overall safety of the intersection.