WisDOT MAPSS - Mobility - Reliability - Delivering transportation choices that result in efficient trips and no unexpected delays.
Reliability - Delivering transportation choices that result in efficient trips and no unexpected delays.This measure tracks the consistency of traffic patterns throughout the state. The Planning Time Index shows the disparity in travel times when drivers experience much longer travel times than expected. A decreasing planning time index means delay has been reduced from what it has been on those travel days with delay. The numbers are not comparable to MAPSS results published prior to 2018, as the federal performance data source, used for this measure, was revised in 2017. The travel time reliability goal is to improve reliability from the prior year’s performance result (a lower number is better).
To view more detailed information visit: Performance Map and Statewide County List.
Travelers expect to arrive safely and on time at their destination. Planning Time Index (PTI) expresses the predictability of on-time arrival in a mathematical term that helps travelers more precisely budget travel time and transportation planners better measure system performance.
Travel reliability measures variability of congestion. A wide variation in the recorded travel time indicates low reliability and a high planning time index. Traffic incidents, weather conditions, special events, holiday travel, sporadic demands and work zones are all dynamic components of traffic congestion that may adversely affect travel time reliability. Reducing or mitigating the impact of these factors makes travel time more reliable.
WisDOT is focused on improving reliability and infrastructure through key projects. In 2024, the department was completing major initiatives, such as work on I-894 and I-43 in Milwaukee and Ozaukee counties and reconstructing 23 miles of I-41 from Appleton to De Pere. Future projects aim to address deteriorating roads, enhance safety, and maximize state and federal funding. WisDOT is testing video analysis to help detect and verify changing traffic conditions, incidents and disabled vehicles more quickly. The department also is modernizing the hardware and software that controls ramp meters in the Milwaukee and Madison regions. Additional systems are being deployed to help more effectively alert the traveling public and responders of wrong-way drivers.