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The Silver Line is San Diego's first bus rapid transit corridor, providing high-frequency express service from the growing South Bay communities of Otay Ranch and Otay Mesa to downtown San Diego.
San Diego's newest trolley line opened in September 2024, connecting UC San Diego and the VA Medical Center to the existing trolley network via a mid-coast corridor through UTC and Old Town.
Rapid 225 provides express service from the Otay Mesa border region through National City and Barrio Logan to downtown San Diego, serving the rapidly growing South Bay communities.
Rapid 235 connects SDSU to UTC via a diagonal route through San Diego's most walkable urban neighborhoods — Kensington, Normal Heights, North Park, Hillcrest, and Old Town.
Rapid 215 provides high-frequency service along the Mid-City corridor from SDSU to downtown San Diego, connecting the college area through University Heights and Hillcrest to the city center.
The Sprinter is a hybrid rail line connecting Oceanside to Escondido through inland North County San Diego communities, providing east-west service complementing the coastal Coaster line.
The Green Line expanded San Diego trolley service to Mission Valley and the SDSU campus, with the Mission Valley extension connecting Qualcomm Stadium (now Snapdragon) and eastern communities to Santee.
The Pacific Surfliner is the second-busiest Amtrak route in the US, carrying over 3 million riders annually along 351 miles of Southern California coast from San Diego to San Luis Obispo via Los Angeles.
The Coaster commuter rail runs along the scenic Pacific coast from Oceanside to San Diego's Santa Fe Depot, offering stunning ocean views and serving North County beach communities.
The Orange Line extended trolley service east from the Convention Center and Gaslamp Quarter through downtown to El Cajon in the eastern suburbs, serving communities along the I-8 corridor.
San Diego's first trolley line and the first modern light rail system in California. Connects downtown to the US-Mexico border at San Ysidro, the busiest land border crossing in the Western Hemisphere.