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Open Access Publications from the University of California

The Effects of New High-Occupancy Vehicle Lanes on Travel and Emission

  • Author(s): Johnston, Robert A.
  • Ceerla, Raju
  • et al.

Many urban regions in the U.S. are planning to build extensive networks of new high-occupancy vehicle (HOV) freeway lanes. Past modeling efforts are reviewed and travel demand simulations by the authors are used to demonstrate that new HOV lanes may increase travel (vehicle-miles) and increase emissions when compared to transit alternative. Recommendations are made for better travel demand modeling methods for such evaluations.

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