Driving Emergencies, ABS & Skid Control — CDL General Knowledge Practice Test

This CDL General Knowledge Driving Emergencies, ABS & Skid Control practice set has 24 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 Driving Emergencies, ABS & Skid Control bank with the correct answer and an explanation. The practice quiz above draws 24 questions at random from the same bank.

1. In an emergency, is stopping always the safest thing to do?

   • No — when there is not enough room to stop, you may have to steer away — Correct answer
   • Yes — stopping is always the safest response
   • Yes — you should never steer in an emergency
   • Yes — but only if traffic is heavy

   Explanation: No. When you don't have enough room to stop, you may have to steer away from what's ahead — stopping is not always safest. English term: steering to avoid a crash（转向避撞 / dirigir para evitar un choque）.

   Handbook: Emergencies, ABS & Skids — Steering to Avoid a Crash

2. To avoid hitting an obstacle, which can you almost always do more quickly?

   • Turn (steer) to miss the obstacle — Correct answer
   • Brake to a complete stop
   • Downshift through the gears
   • Lock up the wheels

   Explanation: You can almost always turn to miss an obstacle more quickly than you can stop. (Caution: top-heavy vehicles and tractors with multiple trailers may flip over.) English term: steering to avoid a crash（转向避撞 / dirigir para evitar un choque）.

   Handbook: Emergencies, ABS & Skids — Steering to Avoid a Crash

3. To be able to turn quickly in an emergency, how should your hands be on the steering wheel?

   • A firm grip with both hands, kept on the wheel at all times — Correct answer
   • One hand on the wheel, the other resting on the gearshift
   • Hands held loosely so the wheel can move freely
   • Both hands at the bottom of the wheel

   Explanation: To turn quickly you must have a firm grip with both hands; the best way to be ready is to keep both hands on the wheel all the time. English term: steering wheel（方向盘 / volante）.

   Handbook: Emergencies, ABS & Skids — Steering to Avoid a Crash