MileCheckRest areas
Can you sleep at a rest area in California?
Your mile marker on screen as you drive. Plus live alerts and cameras in the MileCheck app.App StoreGoogle Play
Yes, but no more than 8 hours in any 24-hour period.
Cars
Vehicles can't be parked, and people can't stay, for more than 8 hours in any 24 hours.
Trucks
Same 8-hour rule. Park only in designated parking areas.
Camping and tents
Camping, tents and other shelters, and campfires are prohibited. Gas stoves are allowed inside equipped vehicles like RVs.
Signs at a rest area can set a different limit. Follow the posted sign. Turnpike and toll-road service plazas often have their own rules.
Source
21 CCR 2205. Read October 15, 2026. This page summarizes the rule. It is not legal advice.