Not affiliated with any state DMV or AAMVA. Original questions based on the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026).
CDL doubles and triples test: practice test with original questions from a state CDL handbook
Practice for the CDL doubles and triples (T) endorsement knowledge test with 37 original questions written from a state CDL handbook based on the national model manual (Texas DL-7C, revised March 2026), in English and Spanish.
37 Fragen · Modi: Lernen, Themen-Drill, Täglich 5
Über diesen Test
Practice for the CDL doubles and triples (T) endorsement knowledge test with original questions written from the matching section of the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026), which follows the national AAMVA model CDL manual used by most states. Every correct answer is backed by a passage of the handbook and checked by two independent verifiers.
- Study: every question with a short explanation.
- Topic drills: pulling double and triple trailers, coupling and uncoupling, inspecting doubles and triples.
- Mock test: not offered, because the handbook states the 80% pass mark but not the number of questions.
The questions are written in our own words in English and Spanish; this is not any state's question bank. The CDL general knowledge test and other endorsements are separate pages.
Themen
- Air flow check · 3
- Uncoupling the rear trailer · 3
- Antilock brakes on dollies · 2
- Managing space · 2
- Shut-off valves · 2
- Triple trailers · 2
- Checking air to the rear · 1
- Complete inspection · 1
- Converter dolly brakes · 1
- Converter dolly checks · 1
- Crack-the-whip · 1
- Curve speed · 1
- Dolly to front trailer · 1
- Fifth wheel check · 1
- Inspection procedure · 1
- Look far ahead · 1
- Parking · 1
- Pintle hook check · 1
- Pintle hook when uncoupling · 1
- Rollover prevention · 1
- Safety chains and cords · 1
- Securing the rear trailer · 1
- Stability · 1
- Testing the coupling · 1
- Trailer emergency brake test · 1
- Trailer height · 1
- Trailer order · 1
- Trailer service brake test · 1
- Visual check of coupling · 1
Quellen und Version
- Texas Commercial Motor Vehicle Drivers Handbook (DL-7C)Umfasst: Revised March 2026
Umfasst: Texas DL-7C, revised March 2026 · Als aktuell bestätigt am 28.10.2026
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