Travel Time Based Congestion Measures for Freeway Corridors - Stage 2 Planning Study No 18

The objectives of this study are: (1) Calculate ITI, PTI, and percentage travel under congestion for freeways within the TRIMARC coverage; and (2) Explore potential correlation between ITI, PTI, percentage travel under congestion and incident data (e.g., number of incidents, duration, severity, etc.). These analyses will be performed for the years 2005-7 for each monitored segment and freeway corridor as well as for the entire freeway system. In 2005, there were approximately thirty-nine miles of freeway that are under the surveillance of ninety-two detector stations, including four miles on 1-71, twenty-one miles on 1-64, seven miles on 1-65, and seven miles on 1-264.