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General Knowledge · Driving Emergencies

What is the correct way to bring a vehicle to a controlled emergency stop?

1.Apply firm, steady pressure to the brake pedal in a straight line, keeping the wheels just short of locking upCorrect answer
2.Lock the wheels deliberately with full pedal force and let the vehicle slide to a halt in a straight line
3.Steer sharply from side to side while braking, so that the vehicle loses speed faster than it otherwise would have
4.Downshift several gears at once while braking as hard as the brake pedal will physically allow you to

Explanation

A controlled emergency stop uses firm, steady brake pressure in a straight line, keeping the wheels rolling just short of lockup, so the driver retains steering control throughout the stop. 49 CFR 383.111(a)(14)(ii) names the emergency stop as required knowledge without describing the technique, so this is standard driver-training content, attributed to the manual. The wrong options all risk locking the wheels or losing directional control: deliberately locking the wheels sends the vehicle into a skid and gives up steering control, steering side to side adds instability instead of reducing speed, and downshifting multiple gears at once while braking hard can upset the drivetrain and the vehicle's balance.

Source: 49 CFR 383.111(a)(14)(ii)

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