Most Oceanside DUI arrests occur downtown Oceanside, the I-5 freeway, Highway 76, Highway 78 and El Camino Real. California Highway Patrol makes most of the I-5, Hwy 76 and Hwy 78 arrests and Oceanside Police Department make most of the arrests downtown and on El Camino Real.
The Vista Court DUI cases come from arrests all over incorporated and unincorpaorated areas of North San Diego County. The main population areas include Oceanside, Vista, San Marcos, Escondido, Fallbrook, Valley Center, Carlsbad, Enciinitas, Rancho Santa Fe, Leucadia, Cardiff and even Ocotillo Wells off road areas. South of Escondido, Rancho Bernardo and Poway, arrests go downtown San Diego, as do Del Mar and south arrests. Camp Pendleton Cases on the base, go to downtown Federal Court for Civilians.