Home › CDL Practice Tests › General Knowledge Questions › Question 27
At 55 mph on dry pavement, roughly how far will a heavy vehicle travel from the moment you first see a hazard until it stops?
- A.More than 400 feet
- B.About 100 feet
- C.About 200 feet
- D.About 60 feet
Correct answer
A. More than 400 feet
Why
Under ideal conditions at 55 mph, perception distance is about 142 feet, reaction distance about 61 feet, and braking distance about 216 feet. Added together, that is about 419 feet, longer than a football field.
Manual topic: Safe Driving - Speed Management · From the General Knowledge practice bank (GK-027).