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 continually looks to enhance reliability through its improvement program. The department is currently constructing upgrades on I-43 in Milwaukee and Ozaukee counties. These projects involve various safety and operational enhancements, lane expansions, interchange reconstructions and fixing deteriorating road conditions. The Northeast Region is making improvements on I-41 by reconstructing and expanding a 23-mile stretch from Appleton to De Pere. There are also plans for future roadway projects across the state to improve deteriorating roadway conditions and ensure safety.
WisDOT is committed to maximizing a recent influx in federal funds to improve the state's infrastructure, public safety, and innovation. While the resulting increase in construction projects may negatively affect or delay metrics temporarily, once these projects are finished, they are expected to have a positive impact for motorists.