Texas Combination Vehicles Test
Practice with questions built for Texas roads – like the 10,000+ trucks you'll see daily on I-10 near Houston.
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Reviewed by Jack Mahana, CDL Instructor (13+ years)
Last verified: August 2026
All questions sourced from the official Texas CDL handbook and FMCSA regulations.
Master combination vehicle safety with 20 Texas-specific questions. Each one matches the official TX DMV test.
Key Topics
- •Coupling & Uncoupling
- •Air Brakes
- •Road Safety
About the Texas Combination Vehicles Test
Topics Covered
- ✓Coupling and uncoupling – critical for Texas oil field trailers that change daily
- ✓Air brakes – essential when Texas summer heat can boil moisture in brake lines
- ✓Vehicle inspection – remember Texas weigh stations that check every detail
- + 3 more topics
📘 Study Tips & State Info
Start with the Texas CDL handbook, pages 46–70. Focus on the pre-trip inspection list – Texas examiners watch you check every light and hose. Spend extra time on air brake adjustment: you'll need to do it on the test.
Use our practice test to find weak spots. Take it repeatedly until you score 90% or higher. On test day, arrive early at your DPS office. Bring your learner permit, medical certificate, and a valid ID. No cell phones allowed in the testing room.
Texas DPS offers CDL knowledge tests at most driver license offices. Walk-ins are accepted, but appointments guarantee a slot. Book online at the DPS website up to 90 days ahead. The test fee is $30 per endorsement, payable by card or cash.
You can take the combination vehicles test in English or Spanish. If you fail, you must wait 24 hours before retesting. For the skills test, third-party testers are available in many counties – often faster than DPS. Check the DPS list of approved third-party testers near you.
Remember: Texas requires a CDL for any combination vehicle with a gross combination weight rating of 26,001 pounds or more. Don't forget your medical certificate – without it, you can't start the test.
About the Texas Combination Vehicles Test
Texas has more trucking miles than any other state. From oil field tankers on US 285 to livestock trailers on I-35, combination vehicles rule our highways. You'll face unique challenges – flat land that pushes speed limits, sudden thunderstorms that slick the asphalt, and construction zones that shift lane widths.
Our practice test covers the exact topics from the Texas CDL handbook. Each question targets a skill you need on real Texas roads. You'll learn how to couple trailers correctly, manage air brakes in 100°F heat, and inspect your rig before hitting a weigh station.
Don't waste time on generic practice tests. We built this for Texas drivers. Pass your combination vehicles endorsement the first time – save money and get on the road faster.
Topics Covered
Study Tips
Start with the Texas CDL handbook, pages 46–70. Focus on the pre-trip inspection list – Texas examiners watch you check every light and hose. Spend extra time on air brake adjustment: you'll need to do it on the test.
Use our practice test to find weak spots. Take it repeatedly until you score 90% or higher. On test day, arrive early at your DPS office. Bring your learner permit, medical certificate, and a valid ID. No cell phones allowed in the testing room.
Texas Specific Information
Texas DPS offers CDL knowledge tests at most driver license offices. Walk-ins are accepted, but appointments guarantee a slot. Book online at the DPS website up to 90 days ahead. The test fee is $30 per endorsement, payable by card or cash.
You can take the combination vehicles test in English or Spanish. If you fail, you must wait 24 hours before retesting. For the skills test, third-party testers are available in many counties – often faster than DPS. Check the DPS list of approved third-party testers near you.
Remember: Texas requires a CDL for any combination vehicle with a gross combination weight rating of 26,001 pounds or more. Don't forget your medical certificate – without it, you can't start the test.