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Seeing Hazards & Distracted Driving — CDL General Knowledge Practice Test

Seeing Hazards & Distracted DrivingQuestion 1 of 30

30 questions in this topic · 30 drawn at random this round

Why can parked vehicles be a hazard?

CDL Manual — General Knowledge

Questions are based on the official CDL manual (AAMVA model) used by state DMVs. The real CDL knowledge test is given in English — federal rules (FMCSA, 49 CFR 391.11) require English proficiency to drive commercially; our Chinese & Spanish are study aids. Some states also offer the written test in other languages (see the per-state table).

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This CDL General Knowledge Seeing Hazards & Distracted Driving practice set has 30 practice questions based on the official exam materials, each with an instant explanation. You need 80% on the real CDL General Knowledge knowledge test to pass.

Sample questions

Three questions from the Seeing Hazards & Distracted Driving bank with the correct answer and an explanation. The practice quiz above draws 30 questions at random from the same bank.

  1. What is a hazard?

    • Any road condition or other road user that is a possible danger — Correct answer
    • Only a crash that has already happened
    • A posted speed-limit sign
    • A vehicle traveling at the legal speed

    Explanation: A hazard is any road condition or another road user that is a possible danger — when you see one, plan how you would react if it turns into an emergency. English term: hazard（危险 / peligro）.

    Handbook: Seeing Hazards & Distracted Driving — Seeing Hazards

  2. Why should you look for hazards as you drive?

    • So you have time to plan a way out before a hazard becomes an emergency — Correct answer
    • So you can report every hazard to the police
    • So you can drive faster around them
    • Looking for hazards is only required during the road test

    Explanation: You look for hazards so you have time to plan a way out before a hazard turns into an emergency — this makes you a prepared, defensive driver. English term: hazard（危险 / peligro）.

    Handbook: Seeing Hazards & Distracted Driving — Always Have a Plan

  3. Why are foreign objects that have fallen on the road a hazard?

    • They can damage tires, rims, and brake or electrical lines, or be heavier than they look — Correct answer
    • They are always too small to matter
    • They improve traction on wet roads
    • Only liquids on the road are a danger

    Explanation: Objects on the road can damage your tires, wheel rims, and brake or electrical lines, and can get caught between dual tires — even harmless-looking boxes may hold heavy material, so stay alert and spot them early. English term: hazard（危险 / peligro）.

    Handbook: Seeing Hazards & Distracted Driving — Hazardous Roads