Research

Evaluation of the Effect MnPASS Lane Design has on Mobility and Safety

Principal Investigator:

  • John Hourdos, Director, MN Traffic Observatory, Civil, Environmental and Geo-Engineering

Co-Investigator

  • Gary Davis, Professor, Civil, Environmental and Geo-Engineering

Project Summary:

High-occupancy vehicle (HOV) and high-occupancy toll (HOT) lanes are restricted-use freeway lanes reserved for vehicles with more than one occupant or equipped to charge single-occupant vehicles (SOV) for using the facility. The goal of HOV/HOT combination lanes is to reduce congestion by promoting ride sharing while better utilizing the facility by allowing SOVs that pay the toll.

The Minnesota Department of Transportation (MnDOT) has so far constructed two such facilities (MnPASS on the median lanes of I-394 and I-35W freeways) and has plans for more. The existing facilities have substantially different access control designs, with no concrete evidence for which is the most appropriate design for a given geometry and demand.

This project aims to evaluate the existing four MnPASS lane designs, indicate which of the existing geometries is the best access control design (if not the current), and develop a design guide to help in future MnPASS lane implementation. Additionally, this project aims to assist MnDOT in developing and estimating MnPASS performance safety criteria.

Project Details:

  • Start date: 05/2011
  • Project Status: Completed
  • Research Area: Transportation Safety and Traffic Flow

Reports or Products:

"Evaluation of the Effect of MnPASS Lane Design on Mobility and Safety" (2014)


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