Improving Minneapolis/St. Paul's Ramp Metering System for Smoother Traffic Flow Status: CompleteReport Date: 12/10/2007 Summary: To streamline traffic flow and reduce backups on Twin Cities highways, MnDOT engineers researched ways to improve the algorithm they use to estimate queue size on entrance ramps and calculate minimum rates for releasing cars from ramps to highways. More than 20 parameters were tested through computer simulations. The new optimized algorithm and ramp-monitoring system increases average speed and reduces travel time and energy consumption. Final Deliverables: Employment of the Traffic Management Lab for the Evaluation and Improvement of Stratified Metering Algorithm - Phase IV (Report #2007-51) Improving Minneapolis/St. Paul's Ramp Metering System for Smoother Traffic Flow (Research Summary) Related Materials: Related Research: