CDL (Commercial Driver)
CDL Combination Vehicles Practice Test 10
Free — no payment neededLevel: Mixed
20 original CDL Combination Vehicles questions based on the federal motor carrier safety rules (49 CFR). Practice test, not affiliated with any government agency.
Created by AI
Practice test, not affiliated with any government agency. Original questions written from public sources, checked by a second AI reviewer and automated checks. Rules change; confirm with the official handbook.
Before you start
- Questions
- 20 multiple-choice questions, one at a time
- Time
- About 12 minutes. Untimed — take as long as you need.
- Pass mark
- 16 out of 20 correct (80%)
- Feedback
- Your score, the correct answers and short explanations when you finish
- Account
- Not needed. Your answers stay in this browser.
What this test covers
Inspecting combinationsDriving combinations
Preview the first question
A driver inspects spacers placed between bundles of lumber. How wide must each spacer be compared with its height?
- Narrower than its height to save space
- At least as wide as it is tall
- Half as wide as it is tall
- Exactly one inch wider than its height
Answers are revealed on the results page after you finish.