SR 78 serves as the primary east-west travel corridor between Escondido and Oceanside, traversing through Carlsbad, Vista, and San Marcos, as well as unincorporated areas of San Diego County. It is the main route for local and regional travel in North County and provides north-south connections to Interstates 5 and 15.
North County Comprehensive Multimodal Corridor Plan
Currently, SANDAG and Caltrans are working on a North County Comprehensive Multimodal Corridor Plan (CMCP). CMCPs are data-driven plans to reduce congestion and generate transportation choices while preserving community character and creating opportunities for enhancement projects. CMCPs include all travel modes in a defined corridor – roadways, public transit, bikeways, and more.
