First-Offense DUI in California: Will I Go to Jail?

What actually happens on a first-offense DUI in Los Angeles — the realistic penalties, probation, DUI school, and why jail is rarely served on a clean first offense.
The charges: VC 23152(a) and (b)
Most first-offense DUIs are charged under Vehicle Code 23152(a) — driving under the influence — and 23152(b) — driving with a 0.08% or higher blood-alcohol level. They are usually filed together.
Will you actually go to jail?
On a clean first offense with no injury, jail is rarely served. The more common outcome is three to five years of summary (informal) probation, fines, and DUI school.
The exposure changes quickly with aggravating facts — a very high BAC, an accident, or a minor in the car.
Probation and DUI school
Summary probation for a first DUI typically requires completing a DUI program, paying fines, and staying arrest-free. Violating probation is where jail exposure re-enters the picture.
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