Skip navigation
navigation section title graphic for programs
navigation section title graphic for resources
navigation section title graphic for services

navigation section title graphic for newsletter
Subscribe by entering your

Read newsletter

Public Transit

South Bay Rapid

For more information on South Bay Rapid construction and to subscribe for email updates on the project, please visit  

Project Overview

South Bay Rapid service will provide a rapid and reliable transportation alternative from the Otay Mesa Port of Entry to Downtown San Diego via eastern Chula Vista. It will help minimize traffic congestion along a major transportation corridor and offer service to areas not currently served by rapid transit.

South Bay Rapid is part of a larger system of transit lines being designed and built by SANDAG in partnership with Caltrans and the region’s transit operators, Metropolitan Transit System (MTS) and North County Transit District (NCTD). The system will bring an additional choice to travelers in the region – providing a fast, comfortable service at high frequencies similar to the San Diego Trolley in order to make traveling on transit more convenient for riders.
South Bay Rapid will include 11 stations along the 21-mile route, connecting residents to employment and activity centers in Downtown San Diego and the South Bay. South Bay Rapid will serve offices, shopping centers, recreational facilities, transit-oriented residential communities, schools, and Park & Ride lots, as well as the U.S.-Mexico port of entry at Otay Mesa.

South Bay Rapid will follow a long-planned transit route. Vehicles will travel north on SR 125 from the Otay Mesa border crossing, then west through eastern Chula Vista, head north on I-805 utilizing the carpool lanes, and then travel west on SR 94 into Downtown San Diego. South Bay Rapid  will have direct connection to the carpool lanes on I-805 via a Direct Access Ramp (DAR) at East Palomar Street.

South Bay Rapid will improve travel times when compared to other forms of transit by utilizing dedicated transit only lanes, traffic signal priority, limited station stops, and real-time passenger information. Service along the corridor will be provided at 10-minute frequencies during peak commute hours, and every 15 minutes during mid-day. Modern, comfortable vehicles will feature amenities such as improved riding quality, upgraded interiors, and Wi-Fi service.

South Bay Rapid is funded through TransNet, a regional voter-approved half-cent sales tax for local transportation projects.

Project Manager

Jennifer Williamson, Senior Transportation Planner
Phone: (619) 699-1959, Email:

For media inquiries, please contact David Hicks at (619) 699-6939 or

Related Resources


  • Fact Sheet - South Bay Rapid [PDF: 351KB]