November 9, 2026
DUI checkpoints are a regular part of law enforcement on the Central Coast, especially on Highway 101, in Grover Beach, San Luis Obispo, and surrounding communities during weekends and holidays. Knowing how they work and what your rights are can help you stay calm and make informed decisions if you encounter one.
California law allows police to set up sobriety checkpoints as long as they follow certain guidelines. Officers typically stop every vehicle, or a predetermined number of vehicles (for example, every third car). The stop itself is brief—usually just long enough for the officer to observe signs of impairment and ask a few questions.
Checkpoints are often publicized in advance, but you are not required to avoid them. If you see one and safely turn around before entering, that is generally allowed, provided you do not break any traffic laws while doing so.
An officer will usually ask for your license, registration, and insurance, and may ask whether you have been drinking. You are required to provide your license if you are driving. You do not have to answer questions about where you have been or whether you have consumed alcohol. A polite, short response such as “I’d prefer not to answer any questions” is often enough.
If the officer sees signs of impairment (odor of alcohol, slurred speech, bloodshot eyes, etc.), you may be asked to step out of the vehicle for further evaluation. At that point, field sobriety tests and a preliminary alcohol screening (PAS) device may be offered. You are not legally required to take the PAS test unless you are under 21 or on DUI probation, but refusing field sobriety tests can still lead to arrest if the officer has probable cause.
Checkpoints are designed to deter impaired driving, but they also create situations where drivers can feel pressured. Understanding the basic rules helps you protect your rights while remaining cooperative.
If you or a family member has been stopped at a checkpoint or arrested for DUI in Grover Beach, San Luis Obispo, or elsewhere on the Central Coast, the Law Office of Steven L. Crawford offers free consultations to discuss your options.