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Intersection Control Evaluation
The Intersection Control Evaluation process was developed to provide a technical, systematic method of determining the optimal acceptable traffic control for an intersection. Although not directly related to the SHSP, the selection of a traffic control device has a significant impact on the frequency and severity of crashes.
Engineers have an increasing number of options for intersection traffic control than they had in the past. Previously, the only solution to traffic delay and safety problems for at grade intersections was the installation of a traffic signal. Currently, other options including roundabouts, reduced access intersections and higher capacity intersections are acceptable alternatives to the designer. To select the best option an Intersection Control Evaluation study must be performed to compare viable alternatives. This study should be initiated as early in the project development process as feasible. Previously, Signal Justification Reports must be completed before a new signal or significant modification of a signal can proceed (MN MUTCD May, 2005 and Mn/DOT Traffic Engineering Manual updated July 1, 2003). An ICE would replace the current process. All intersection treatments must be considered as early in the project development process as feasible. This could occur during planning or corridor studies but no later than the scoping portion of an improvement project.