Sleeping in your car or RV directly on the shoulder of Highway 1 (the Pacific Coast Highway) is generally illegal and highly discouraged due to safety and environmental regulations. Most of the iconic stretches, especially through Big Sur, have strict "No Overnight Parking" signs, and the California Highway Patrol (CHP) is very active in 2026 in issuing tickets or towing vehicles to prevent erosion and litter. If you want to sleep by the ocean, you must book a spot at a designated state park or private campground (like Kirk Creek or Pfeiffer Big Sur), which often require reservations 6 months in advance. A grounded "reality check": while there are some designated "Rest Areas" in California where you can stop for up to 8 hours for safety, these are rare on the winding coastal route. Your best bet is to use apps like iOverlander to find legal "dispersed camping" sites in the Los Padres National Forest, which are set back from the actual highway.