Home › All tests › General Knowledge › Question #18
General Knowledge · Question #18
You can lose your CDL for at least one year for the first offense of:
Correct answer: A. Driving under the influence of alcohol or drugs
Explanation: A first DUI conviction in any vehicle while holding a CDL leads to a minimum 1-year disqualification.
Why this question matters on the General Knowledge exam
This question is one of the 65 we have for the General Knowledge CDL knowledge test. The official AAMVA Commercial Driver License Manual chapter on General Knowledge covers exactly this topic, and most state DMV exams pull from the same chapter. Memorizing the right answer is fine for passing, but understanding the underlying rule is what keeps you safe on the road and out of trouble with FMCSA inspectors.
If this topic gave you trouble, take the full General Knowledge practice test to drill it across all the related questions. We recommend reading every explanation, even on the questions you got right, because the manual phrasing in the explanation often shows up word-for-word on the real exam.
Take the full General Knowledge practice test →