Free CDL Doubles and Triples Practice Test
The Doubles and Triples endorsement test covers Section 7 of the CDL manual: the crack-the-whip effect, converter dollies, coupling a second and third trailer, and checking air flow to the last trailer.
20 Doubles and Triples questions with three answer choices, scored at the real 80% pass mark (16 correct), with an explanation from the CDL manual for every answer.
Or start with a free Doubles and Triples drillYou are uncoupling the converter dolly from the first trailer. After lowering the dolly landing gear and disconnecting the safety chains, what do you do before releasing the pintle hook?
CDL Doubles and Triples test at a glance
- Who takes it
- Class A drivers who will pull double or triple trailers.
- Passing score
- 80%
- Answer choices
- 3 per question
- Endorsement code
- T
Your state sets the number of questions from the federal question pool. Our full Doubles and Triples practice test has 20 questions, so you need 16 correct to reach 80%. 38 original Doubles and Triples questions rotate through it, so a second try is a different test.
What’s on the Doubles and Triples test
The test comes from Section 7 of the CDL manual. Our questions cover it in 2 topics, and your practice score report shows how you did in each one.
- Pulling doubles and triples9 practice questions
- Coupling, inspection and air brake checks29 practice questions
Take the full Doubles and Triples test
20 Doubles and Triples questions with three answer choices, scored at the real 80% pass mark (16 correct), with an explanation from the CDL manual for every answer.
Or start with a free Doubles and Triples drillFree Doubles and Triples practice drills
Ten questions with the explanation after each answer. Create a free account to save your results; each drill’s first attempt is free.
CDL Doubles and Triples questions
Is there a skills test for the doubles and triples endorsement?
No. The T endorsement needs a knowledge test only (49 CFR 383.93).
What is on the CDL Doubles and Triples test?
Section 7 of the CDL manual: pulling doubles and triples safely, coupling and uncoupling with converter dollies, inspecting doubles and triples, and the extra air brake checks.
Ready for the DMV?
20 Doubles and Triples questions with three answer choices, scored at the real 80% pass mark (16 correct), with an explanation from the CDL manual for every answer.
Or start with a free Doubles and Triples drillOther CDL practice tests
Questions are written from Section 7 of the model CDL manual; rules from the federal regulations, checked October 2026: Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, AAMVA model CDL manual, revised March 2026) · 49 CFR 383.25 Commercial learner’s permit · 49 CFR 383.71 Driver application and certification procedures · 49 CFR 383.91 Commercial motor vehicle groups · 49 CFR 383.93 Endorsements · 49 CFR 383.133 Test methods · 49 CFR 383.135 Passing knowledge and skills tests · TSA Hazmat Endorsement Threat Assessment Program.
Original independent practice. Not affiliated with or endorsed by FMCSA, AAMVA or any state licensing agency.