Delaware CDL Practice Test 2026

Practice question bank

Sample questions

1. The overhead inside mirror should be adjusted to see:

   • Outside of the driver’s side of the bus.
   • All of the students on the bus. ✓
   • Students in the first four rows of the bus.
   • In front of the bus.

   Vehicle Equipment & Safe Operation · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 11 – Vehicle Inspection Test, p. 150

2. To help prevent rollovers, you should:

   • Accelerate quickly after stopping.
   • Drive slowly around turns. ✓
   • Keep the load near the back of the trailer.
   • Keep the load on one side of the trailer.

   General Driving Knowledge · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 6 – Combination Vehicles, p. 91

3. When near a railroad crossing:

   • You should expect to hear every approaching train.
   • You may not hear a train, even if one is approaching. ✓
   • You will hear two short blasts of a train's horn if a train is approaching.

   Sharing the Road · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 59

4. What is black ice?

   • A thick layer of ice on the road
   • A thin layer of ice on the road ✓
   • Ice that is black from debris on the road
   • Ice that is easily seen

   Bad Weather & Night Driving · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 42

CDL knowledge tests: compare with nearby states