The real Louisiana knowledge test is the DMV exam used for a learner permit. This page contains one fixed 20 question slice of the full free 180 question bank, with an explanation after each answer.
Sample question from test 1
alcohol
What BAC limit applies to a Louisiana driver who is 21 years of age or older?
- .08 percent
- .02 percent
- .04 percent for every driver
- .10 percent
Answer: .08 percent. For a driver age 21 or older, Louisiana identifies .08 percent as the legal BAC limit. The .02 figure belongs to drivers age 20 and younger, while .04 applies to a commercial motor vehicle operator. A reading of .10 is above the adult limit and is not the number to memorize for this category. The practical cue is to match the BAC number to the driver's age before choosing a response, because the guide separates adult, underage, and commercial driving rules.