Metropolitan Transportation Services - Metropolitan CouncilRegional Solicitation (RS) 2026 Travel Time Index was orignally developed as part of the 2050 Transportation Policy Plan (TPP), published 2024. This version has been updated for the 2026 Regional Solicitation grant process and does not match the data in the published TPP or its associated products. This dataset is calculated from StreetLight Data for weekdays (M-Th) from August 1, 2024 to July 31, 2025. StreetLight Data uses a combination of location-based services (LBS) and connected vehicle data (CVD) to estimate vehicle volumes, speeds, travel time, and other measures. Travel Time Index (TTI) is a measure of congestion. TTI is segment average hourly travel time divided by free flow travel time in each link. Free flow travel time is the average travel time during the hours of 12am (midnight) to 6am. If the TTI is 1, the average travel time is the same as the free flow travel time. If the TTI is greater than 1, average travel time is greater than free flow travel, indicating slower speeds. Buffer Index (BI) is a measure of reliability. BI is the 95th percentile segment travel time minus the median travel time, divided by median travel time. This gives an approximate value of how much buffer time drivers need to reach their destination on time with confidence. If the BI is 1, the longest travel times are twice the median travel time, meaning drivers need to give a buffer of 100% of travel time to reach destination with confidence on time. A buffer index of 0.5 means drivers need 50% more time to reach their destination with confidence. This data is for planning purposes and should be used at a regional level. To visualize spatial data for the Metropolitan Council's 2026 Regional Solicitation grant process, showing travel time index and buffer index Current as of 2026Filesus-mn-state-metc-trans-rs2026-traveltimeindexengPublicRS 2026 Travel Time Index [Minnesota]DatasetsMinnesota--Anoka CountyMinnesota--Carver CountyMinnesota--Dakota CountyMinnesota--Hennepin CountyMinnesota--Ramsey CountyMinnesota--Scott CountyMinnesota--Washington CountyMinnesota--Twin Cities Metropolitan AreaMinnesotaMinnesota Geospatial Commons