In San Diego, DUI checkpoints trap motorists throughout the county. Drunk Driving roadblock locations are posted by San Diego DUI attorneys. Google posts these here.
In Florida, one lawyer maintains you can download a note and put it on your window as you enter a checkpoint. That won't work on the left coast.
California drivers are often confronted with driving up to a DUI checkpoint. If it can legally be avoided, do it. But risk some cop stopping you if seen.
The question asked lawyers is whether a California driver has to stop at a DUI checkpoint?
The short answer is yes.
If you try not to, here is the law violated, not to mention a probable arrest for DUI.
California Vehicle Code Section 2814.2 provides: