Iowa CDL Practice Test 2026

Practice question bank

Sample questions

1. Why should the steps of a pre-trip inspection be done in the same order each time?

   • Because you will be less likely to forget to check something ✓
   • Because it will be faster
   • Because it is required by law

   Vehicle Equipment & Safe Operation · Answer: A · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 30

2. An encroachment is when:

   • A driver does not appear for their scheduled basic skills test.
   • A vehicle touches an exercise boundary line during the basic skills test. ✓
   • A driver fails one section of the basic skills test.

   General Driving Knowledge · Answer: B · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 12 – Basic Control Skills Test, p. 172

3. Driving at night is:

   • Safer than driving during the day.
   • Just as safe as driving during the day.
   • More dangerous than driving during the day. ✓

   Bad Weather & Night Driving · Answer: C · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 2 – Driving Safely, p. 52

4. When approaching a railroad crossing while transporting chlorine:

   • You must stop before crossing the tracks. ✓
   • You must reduce your speed before crossing the tracks.
   • You may proceed across the tracks without stopping if no warning lights are flashing.

   Sharing the Road · Answer: A · Official handbook: Texas Commercial Driver License Handbook (DL-7C), Section 9 – Hazardous Materials, p. 127

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