To operate a tractor-trailer or any combination vehicle, you must pass the Texas DPS Combination Vehicles knowledge test. This practice test has 25 questions covering all core combination vehicle topics — more than the real exam, so you build stronger retention before test day.
This is a study tool, not the official Texas DPS exam. Questions are designed to help you learn the material and procedures thoroughly.
- ✓ Coupling and uncoupling procedures step-by-step
- ✓ Fifth wheel, kingpin, and landing gear inspection
- ✓ Air line connections and crossed-line detection
- ✓ Trailer brakes and the trailer hand valve
- ✓ Off-tracking, jackknifing, and trailer sway
- ✓ Rollover prevention and load placement
- ✓ Backing, turning, and combination vehicle handling
Free. No account required. Results shown instantly.
—
Ready to Start CDL Training?
Combination vehicle handling is a core part of Class A CDL training. Get matched with a CDL school near you in Texas — so you get hands-on time coupling, uncoupling, and backing a trailer before your skills test.
Get Matched With CDL Schools →Take the Air Brakes Practice Test Next
Get Matched With CDL Schools
Tell us where you are and we'll connect you with CDL training programs near you in Texas. Free service — schools contact you directly.
✓ You're Matched
A CDL school near you will reach out shortly. Check your phone and email.