North Carolina CDL Practice Test 2026

Practice question bank

Sample questions

1. In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:

   • Air pressure drops to a level between 20 and 45 psi. ✓
   • You are experiencing a trailer jackknife.
   • Wheels have regained traction after a skid.
   • Air pressure is above 45 psi.

   Vehicle Equipment & Safe Operation · Answer: A · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 6 – Combination Vehicles, p. 95

2. Which of the following may result in an applicant being denied a hazardous materials endorsement?

   • They are considered a security threat by the Transportation Security Administration (TSA). ✓
   • They are a lawful U.S. citizen.
   • They work for a foreign company.
   • They do not have perfect vision.

   General Driving Knowledge · Answer: A · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 1 – Introduction, p. 23

3. A commercial motor vehicle driver:

   • May use any cell phone while driving.
   • May only use a hands-free cell phone while driving, if permitted. ✓
   • May only use a cell phone while driving on rural roads.

   Sharing the Road · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 49

4. With your low beam headlights turned on, you should be able to see about ____ ahead of your vehicle.

   • 15 feet
   • 75 feet
   • 100 feet
   • 250 feet ✓

   Bad Weather & Night Driving · Answer: D · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 54

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