Pennsylvania CDL Practice Test 2026

Practice question bank

Sample questions

1. In a dual air brake system, a leak in one system:

   • Always means there are leaks in both systems.
   • May not affect the other system. ✓
   • Is not something to worry about.
   • Will also affect the other system.

   Vehicle Equipment & Safe Operation · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 5 – Air Brakes, p. 85

2. When stopping:

   • The brake pedal should be pressed down gradually. ✓
   • The brake pedal should be pushed down quickly.
   • The brake pedal should be pressed down repeatedly, but not held down continuously.
   • The amount of force required on the brake pedal will be the same each time you slow or stop.

   General Driving Knowledge · Answer: A · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 35

3. Buses must never carry:

   • Small arms ammunition.
   • Soft drinks.
   • Medical supplies.
   • Tear gas. ✓

   Sharing the Road · Answer: D · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 4 – Transporting Passengers Safely, p. 78

4. When you need to stop in an emergency, you should:

   • Lock the wheels and skid to a stop.
   • Stop in a way that keeps your vehicle in a straight line. ✓
   • Stop in a way that turns your vehicle.
   • Expect your vehicle to slow down more quickly than usual.

   Bad Weather & Night Driving · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 61

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