The breathalyzer car lock
A free practice question for the Maryland permit test, with the answer explained.
Independent practice site. We're not the MVA and aren't connected to any government agency.
A breathalyzer car lock keeps your car from doing what?
The rule
If you're caught drinking and driving, you'll have to put in a breath-testing lock that stops the car from starting when it detects alcohol.
A breathalyzer car lock stops your vehicle from starting if it detects alcohol. You must install one if you're caught drinking and driving.
From the Maryland Driver's Manual, Section 9, page 50. This question is our own wording of that rule. The handbook and the MVA have the final word.
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