California law prohibits anyone from operating a vehicle while under the influence of alcohol, drugs, or the combined influence of both alcohol and drugs. Any substance, whether legal or illegal, that can impair your driving abilities can lead to DUI charges. Under California law, the term vehicle is broad and can include scooters, bicycles, and watercraft. For a DUI arrest to occur, it should be evident that you operated a vehicle. If you were just sleeping on the back seat of a vehicle, you could avoid a DUI arrest and charges. It is also illegal to operate a vehicle if you are addicted to a drug and you are not undergoing treatment for the addiction. It would not be safe for someone experiencing withdrawal symptoms to operate a vehicle.
If your blood alcohol concentration, abbreviated as BAC, is at or above the legal limit, law enforcement officers do not have to provide additional evidence to prove your intoxication. The state’s legal limit is 0.08% and 0.04% for commercial drivers. If your BAC is below the legal limit but you show other signs of intoxication, the law enforcement officers can still arrest you.
If the police suspect that you are under the influence, you will be requested to submit to a chemical test or field sobriety tests. The law enforcement officers can use breathalyzer equipment to measure the alcohol content in your breath. The officers can also subject you to a DUI blood test or urine test. When you apply for a driver’s license in California, you give implied consent to submit to a chemical test, though refusal can lead to license suspension and other penalties. Therefore, refusing to submit to a DUI chemical test can lead to the suspension of your driver’s license.



