San Diego’s Interstate 15 Congestion Pricing Project: Attitudinal,Behavioral,and Institutional Issues

Attitudinal, behavioral, and institutional findings are summarized from the evaluation of the Interstate 15 (I-15) congestion pricing project, a 3-year demonstration that allowed single-occupant vehicles to use the existing I-15 high-occupancy-vehicle lanes, known as the I-15 express lanes, for a fee. The project was part of the FHWA Congestion Pricing Pilot Program and was managed by the San Diego Association of Governments. San Diego State University conducted an independent, multielement evaluation of the project. FasTrak offered all travelers on I-15 a choice of whether to pay for the use of the lanes. FasTrak users saved time by using the express lanes. The most-cited reason to join FasTrak was the need for on-time arrival. FasTrak users and I-15 carpoolers continuously perceived traffic conditions in the I-15 express lanes as satisfactory. A majority of FasTrak customers and an increasing fraction of I-15 carpoolers considered the project successful. Equity issues did not emerge despite the fact that FasTrak users came from the highestincome groups. Potential business interest in a program like FasTrak primarily hinges on the company’s perceived dependency on a corridor in which the program is installed. Homeowners surveyed considered the I-15 pricing program as a secondary factor in their decision to relocate along the I-15 corridor. Many involved in implementing the project perceived that the project matched or exceeded their expectations. They stated that it proved that pricing was a technically and politically viable strategy. The media satisfactorily informed the public about the project.