Stopping Distance - ONLINE CDL SCHOOL

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Stopping Distance

Build confidence with 10 original questions about Stopping Distance. Review your answers and explanations after finishing.

Supplemental study practice. This is not a government licensing exam or ELDT certification, and does not replace hands-on training. Follow your state’s current handbook.

1 / 10

What is the total stopping distance at 45 mph for a heavy vehicle?

310 feet

390 feet

81 feet

150 feet

2 / 10

What effect does doubling your speed have on your stopping distance?

It increases stopping distance by three times

It increases stopping distance by four times

It doubles your stopping distance

It has no effect on stopping distance

3 / 10

How does a wet road affect your stopping distance compared to a dry road?

It has no effect on stopping distance

It reduces stopping distance by half

It increases stopping distance by one-third

It can double your stopping distance

4 / 10

How does traction affect your ability to steer or brake a vehicle?

Without traction, you cannot steer or brake effectively

Traction only affects acceleration

Traction only matters on dry roads

Traction is not important for braking

5 / 10

On a wet road, how should you adjust your speed to maintain the same stopping distance as on dry pavement?

Reduce speed by about one-third

Increase speed by one-third

Do not change your speed

Reduce speed by half

6 / 10

At 55 mph on dry pavement with good brakes, about how far will it take a heavy vehicle to stop after the brakes are applied?

600 feet

150 feet

390 feet

250 feet

7 / 10

If you must use low beam headlights at night, what should you do to ensure safe stopping?

Only use parking lights

Drive slowly enough to stop within the distance you can see ahead

Use high beams at all times

Drive at the posted speed limit regardless of visibility

8 / 10

What should you do before entering a curve to maintain control of your vehicle?

Accelerate into the curve

Slow to a safe speed before entering the curve

Shift to a higher gear

Brake hard in the middle of the curve

9 / 10

What is the safest speed to drive in heavy traffic?

The speed of other vehicles, if legal and safe

The posted speed limit, regardless of conditions

10 mph above the flow of traffic

As fast as possible to save time

10 / 10

If the road is icy, what is the safest action to take?

Use cruise control to maintain steady speed

Increase your speed to get off the ice quickly

Brake hard to stop immediately

Reduce speed to a crawl and stop driving as soon as you can safely do so

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