WisDOT Traffic Operations Infrastructure Plan

Statewide, Wisconsin

The Wisconsin Department of Transportation retained SRF to conduct planning-level analysis on 38 important transportation corridors throughout the state. SRF recommended suitable levels of surveillance, detection, incident management, and traffic flow management on the corridors. Each corridor was broken up into segments and each of the segments was color-coded according to the need for traffic operations strategies. Additionally, each of the strategies was color-coded for each segment. All of this information was displayed on corridor maps that were formatted to be similar to the 2030 Corridor maps developed by WisDOT.

To produce the final maps, several data analysis and synthesis steps were taken. One of the preliminary steps was to develop an algorithm that took all of the provided data into account and weighted its importance. SRF and their partners developed thresholds for each of the traffic flow and safety parameters based on several factors including statistical analysis and research of highway traffic flow. This value determined the initial segment color that represents level of operational enhancement need.

While these levels provided a basic amount of information for the deployment strategies, they were not uniform enough to recommend a consistent, uniform, strategy. To do this, each small segment was analyzed by considering all the traffic flow, safety and event criteria. This detailed level of analysis was used to make final recommendations about the traffic operations strategies. Each of the analyzed segments was considered as part of the corridor system and SRF made final traffic operations recommendations. Upon completion of these recommendations, SRF presented the findings to each of the WisDOT Regions and, with their partners, wrote a Final Operational Planning report and provided the process to WisDOT for future use


  • 2008 FHWA & FTA Transportation Planning Excellence Award

Wisconsin Department of Transportation