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September 11, 2021 <br />Page 25 <br />Methodology <br />The congestion analysis completed as part of this study uses speed data derived from GPS-enabled <br />devices to locate where and when congestion is happening. The GPS speed data was accessed <br />through MnDOT's subscription to the ClearGuide web platform. This data was collected during the <br />AM and PM peak hours from different days in April, May, September, and October 2019. Speed <br />data was analyzed at both the regional and corridor level. See Appendix C for additional information <br />about how the study's congestion analysis was conducted. <br />Northwest Metro Mississippi River Crossing Feasibility Analysis <br />