Development of active traffic management strategies for Minnesota freeway corridors : final report.

Final reportPDFTech ReportMN/RC 2015-26CTS # 2012007(c) 99008 (wo) 3Ramp meteringBottlenecksVariable speed limitsAdaptive controlHighway corridorsUnited StatesMinnesotaMinnesota. Dept. of Transportation. Research Services & LibraryKwon, EilPark, ChongmyungUniversity of Minnesota, Duluth. Department of Civil EngineeringMinnesota. Dept. of Transportation. Research Services & LibraryUS Transportation CollectionIn this study, the effectiveness of the I-35W variable advisory speed limit system on the improvement of the trafficflow was evaluated with the real traffic data. The analysis results indicate there was significant reduction in theaverage maximum deceleration and also the traffic time reliability was substantially improved during a peak hourperiod. Based on the assessment results, an enhanced version was developed to be able to reflect more effectivelythe time-variant road traffic conditions in determining the variable speed limits in real time. The coordinatedadaptive metering strategy, developed in the previous phase of this research, is also enhanced and implemented inthe field in this research. The field test results of the new metering system with the 100 NB corridor indicatesubstantial improvements in both the mainline and ramp traffic performance compared with those from the oldstratified algorithm