Do I have to comply with law enforcement at a DUI checkpoint? See what California law says
Drivers in California are legally required to stop and submit to a sobriety checkpoint inspection when law enforcement requires it.
Drivers are not legally obligated to submit to field sobriety tests, pre-arrest breath tests, or cheek swabs at a DUI checkpoint, but refusing a post-arrest breath or blood test is considered a chemical test refusal. [ more ]