ELDT Speed and Space Management 2

Question 1

What is the recommended following distance for a heavy vehicle traveling under 40 mph?

Accepted Answer

1 second for every 10 feet of vehicle length

Answer

Below 40 mph, allow one second of following distance for each 10 feet of vehicle length.

Question 2

When traveling over 40 mph, how should a driver adjust the following-distance formula?

Accepted Answer

Add one second to the low-speed count

Answer

Over 40 mph you add one additional second to the length-based following distance.

Question 3

Why do heavy vehicles need more following distance than cars?

Accepted Answer

They take longer to stop

Answer

Their greater weight and length mean longer stopping distances than passenger cars.

Question 4

What is 'total stopping distance' composed of?

Accepted Answer

Perception, reaction, and braking distance

Answer

Total stopping distance = perception distance + reaction distance + braking distance.

Question 5

How does empty trailer weight affect braking?

Accepted Answer

Empty trucks can take longer to stop due to less traction

Answer

Empty trucks have less traction, so brakes can lock up and stopping can actually take longer.

Entry Level Driver Training (ELDT) Practice Test