This new bus route is being planned in response to public feedback asking for faster transit service to Central San Diego from the U.S.-Mexico border. It will complement the Blue Line Trolley service, taking riders from the San Ysidro Transit Center to Downtown San Diego with limited stops along I-5.
Rapid 640 is one of many transit solutions planned to help reduce crowding during commute times, offering a fast, reliable alternative to driving. It will provide access to jobs, education, medical services, recreation, and more.
Since early 2025, SANDAG has been studying where the route could go, its potential stops, and many other details, while continuing to collect public feedback along the way to inform this process. This work will continue through 2027. Pending funding for planning, design, and construction, Rapid 640 could be open for riders as soon as 2029.
Watch the learning session (en español) about this project from April 2, 2025.
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