An Investigation of Solutions to Alleviate Recurring Congestion on Freeways

Project No: 84667

Target Completion Date: March 31, 2009 Safety, Operations, and Traffic Engineering

About the project:

The purpose of this research is to develop and model potential solutions to alleviate recurring congestion in Northern Virginia on I-95 and I-66.  Techniques such as dynamic ramp metering, variable speed limits, and minor geometric improvements will be investigated for their potential to mitigate congestion. Data will be examined to determine how and why the traffic flow breaks down and the process by which it returns to normal.  The exact speed, time of day, volume, density and geometric characteristics at the critical points will be recorded.  Conditions immediately prior to flow breakdown will be examined in an effort to identify predictors for future breakdowns and triggers for implementation of countermeasures.  Modeling will be used to quantify the potential benefits of any proposed countermeasures.

Project Team

Project Monitor

Other Investigators

  • Michael Demetsky, Nicholas Mazzenga

Last updated: July 5, 2023

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