Prepare for the California DMV Traffic School Test. Study with interactive quizzes, flashcards, and understand with detailed explanations. Get cleared for your driving confidently!

Multiple Choice

What is the legal BAC limit for drivers 21 and older in California?

California sets a blood alcohol content limit of 0.08% for drivers 21 and older. This means that when your BAC reaches 0.08% or higher, it’s illegal to operate a vehicle. The law uses this threshold to define DUI, so you can be charged even if you don’t feel noticeably impaired. It’s also helpful to know other limits exist for different situations—commercial drivers must stay at or below 0.04%, and drivers under 21 have a zero-tolerance standard—but for adults, 0.08% is the standard that makes driving illegal.

California sets a blood alcohol content limit of 0.08% for drivers 21 and older. This means that when your BAC reaches 0.08% or higher, it’s illegal to operate a vehicle. The law uses this threshold to define DUI, so you can be charged even if you don’t feel noticeably impaired. It’s also helpful to know other limits exist for different situations—commercial drivers must stay at or below 0.04%, and drivers under 21 have a zero-tolerance standard—but for adults, 0.08% is the standard that makes driving illegal.