Practice question

When should you place your reflective triangles after stopping on the road due to a breakdown?

  1. Within 30 minutes of stopping
  2. Within 10 minutes of stopping
  3. Only if it is dark outside
  4. Only on highways with speed limits over 55 mph

Answer: B — Within 10 minutes of stopping

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Illinois CDL General Knowledge Practice Questions - Illinois Commercial Driver License General (Core) Knowledge Test Exam →