DMV CDL Flashcards
What is the minimum tread depth for front tires?
4/32”
What is the minimum tread depth for the rear tires?
2/32”
The steering wheel should have no more than how many degrees of play?
10 degrees
At what psi does the low air light come on for the air brakes?
60 psi
At what psi should the parking brake knob engage on air brakes?
40 psi
During an air brake system test your air brake pressure should not drop more than how many psi during one minute?
4 psi for combination vehicles and 3 psi for single vehicles
What is the distance your vehicle travels from the time your eye sees a hazard until your brain recognizes it?
Perception Distance
What is the distance traveled from the time your brain tells your foot to move from the accelerator until the time your foot pushes the brake?
Reaction Distance
What is the distance it takes the vehicle to stop once you hit the brakes?
Braking Distance
What is the total stopping distance?
Perception Distance + Reaction Distance + Braking Distance
Wet roads ____ stopping distance
Double
When you double your speed it takes ___ times as much distance to stop your vehicle.
Four
What is the distance your vehicle travels from the time your foot pushes the air brake until the brakes take hold?
Brake lag distance
What is the distance your vehicle travels between the time the brakes take hold and the vehicle stops?
Braking Distance
