Ace Your DMV Written Test with our Guaranteed Cheat Sheet.
Cheat sheet
Question
If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
Answers
A.  32 feet
B.  45 feet
C.  20 feet
Explanation
The total stopping distance for vehicles equipped with air brakes is made up of four factors: perception distance, reaction distance, brake lag distance, and braking distance. When braking at a speed of 55 mph while driving on dry pavement, the brake lag can add around 32 feet to the vehicle's total stopping distance.

Pass your DMV Written Test with flying colors

Ace Your DMV Written Test
Get your Cheat Sheet Now!