DGT Speed Management & Distance Control Flashcards

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

Answer: 3 seconds

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

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

Answer: 88 feet

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

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

Answer: When roads are wet or visibility is reduced

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

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

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

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

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

Answer: 55 mph

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

Which factor does NOT directly affect your total stopping distance?

Answer: Vehicle color

Vehicle color has no effect on stopping distance; reaction time, weight, and tire condition all influence how quickly a vehicle stops.