For drivers under 21, what is the legal blood alcohol concentration (BAC) limit?
In California, the legal BAC limit for drivers under 21 is 0.00%, meaning any measurable amount of alcohol in their system is illegal. This strict limit is part of efforts to deter underage drinking and driving, ensuring safety on the road.
See the exact questions that will be on the 2026 California DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
