The Santa Ana Police Department will conduct a driving under the influence (DUI) and driver’s license checkpoint on Friday, August 7, 2026. Commercial Driver’s License (CDL) holders are held to a much stricter legal threshold. First-Time CDL Disqualification: A first-offense DUI conviction results in a mandatory one-year suspension of all commercial driving privileges, regardless of whether the violation occurred in a personal car or a commercial rig. When it comes to marijuana, there is no specific legal limit or baseline amount that automatically triggers a DUI in California. [1]How to Avoid Trouble: Relying on Rideshares and Safe PracticesThe only absolute way to avoid the legal and financial fallout of a DUI checkpoint is to ensure you never drive while impaired.