DGT DGT Speed Management & Distance Control

Question 1

What is the minimum safe following distance recommended when driving at highway speeds in normal conditions?

Accepted Answer

3 seconds

Answer

A minimum 3-second following distance is recommended at highway speeds to allow adequate reaction and braking time.

Question 2

If you are driving at 60 mph, approximately how many feet does your vehicle travel per second?

Accepted Answer

88 feet

Answer

At 60 mph, a vehicle travels approximately 88 feet per second, which is why adequate following distance is critical.

Question 3

When should you increase your following distance beyond the standard 3-second rule?

Accepted Answer

When roads are wet or visibility is reduced

Answer

In wet or low-visibility conditions, stopping distances increase significantly, requiring a greater following distance.

Question 4

What is the primary reason speed limits are lower in school zones?

Accepted Answer

To allow children time to cross safely and give drivers reaction time

Answer

Reduced speed limits in school zones exist because children are unpredictable pedestrians and lower speeds give drivers more reaction time.

Question 5

What is the general speed limit on a rural two-lane road in most U.S. states when no posted sign is visible?

Accepted Answer

55 mph

Answer

Most U.S. states set a default speed limit of 55 mph on rural two-lane undivided highways when no sign is posted.

(DGT) Directorate-General for Traffic Test Practice Test