CDL (Commercial Driver)
CDL Doubles/Triples (T) Practice Test 5
Free — no payment neededPractice betaLevel: Mixed
20 original CDL Doubles/Triples (T) questions based on the federal motor carrier safety rules (49 CFR). Practice test, not affiliated with any government agency. Practice beta.
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. Available in 2 languages (translations are machine-made and checked automatically).
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 doubles triplesPulling doubles triplesCoupling doubles triples
Preview the first question
Where should the air and electrical lines between trailers be?
- Secured so they will not drag or tangle
- Tied tightly to the dolly tongue with no slack left for turns
- Lying loose on the dolly tongue
- Hooked over the trailer doors
Answers are revealed on the results page after you finish.