CDL PERMIT WRITTEN EXAM QUESTIONS AND
CORRECT ANSWERS(VERIFIED ANSWERS)
You must have a cdl to operate - ans -A single vehicle or combination with a gross
weight of 26,001 pounds or more
Vehicle designed to transport 16 people or more, driver included
All school buses
Any vehicle carrying hazardous material
What should you not due when crossing a railroad track - ans -Switch gears
What must you consider when you are selecting a safe speed to go down a steep
hill - ans -Total weight of the vehicle and cargo
Length of grade
Steepness of the grade
Road conditions
Weather
Proper braking technique - ans -once vehicle is in proper low gear...
[1] Apply brakes just hard enough to feel definite slowdown
[2] When 5mph below "safe" speed release the brakes (for about 3 seconds)
[3] When speed has increased to "safe speed", repeat steps 1 & 2
Why should you be i proper gear before starting down a hill - ans -So you can use
your engine brake and not over heat your brakes and so you do not have to shift
gears going downhill
What type of vehicles can get stuck on a railroad-highway crossing? - ans -Low
slung units (lowboy, car carrier, moving van, possum-belly livestock trailer).
How to turn quickly and safely: - ans -Do not apply brake while turning
, Do not turn more anymore than needed to clear whatever is in your way
Be prepared to counter steer
What should you do if an oncoming driver is in your way - ans -Steer all the way to
your right because there reaction will be to steer back into there lane
Why should u keep one set of wheels on the pavement - ans -It will help you
maintain control
Returning back on the road - ans -Hold wheel tightly and turn sharply enough to
get back on the road safely, do not try to get back on it gradually because tires
might grab unexpected
What methods can you use to break quickly and safely - ans -Controlled Braking
Stab Braking
Controlled Braking - ans -In this method you brake as hard as you can without
locking the brakes keeping steering wheel movements very small
Stab braking: - ans -Involves releasing the brakes only after the wheels lock up
and applying brakes again as soon as they lock up again
Why shouldn't you jam on the brakes - ans -Because it will only keep the wheels
locked up and cause a skid meaning you cannot control the vehicle
two reasons why hydraulic brakes fail - ans -Loss of hydraulic pressure
Brake fade on long
What should you do when you lose hydraulic pressure - ans -Downshift
Pump the brakes
Use the parking break
Find escape route
Signs of tire failure - ans -Sound (loud bang)
Vibraton
Feel
CORRECT ANSWERS(VERIFIED ANSWERS)
You must have a cdl to operate - ans -A single vehicle or combination with a gross
weight of 26,001 pounds or more
Vehicle designed to transport 16 people or more, driver included
All school buses
Any vehicle carrying hazardous material
What should you not due when crossing a railroad track - ans -Switch gears
What must you consider when you are selecting a safe speed to go down a steep
hill - ans -Total weight of the vehicle and cargo
Length of grade
Steepness of the grade
Road conditions
Weather
Proper braking technique - ans -once vehicle is in proper low gear...
[1] Apply brakes just hard enough to feel definite slowdown
[2] When 5mph below "safe" speed release the brakes (for about 3 seconds)
[3] When speed has increased to "safe speed", repeat steps 1 & 2
Why should you be i proper gear before starting down a hill - ans -So you can use
your engine brake and not over heat your brakes and so you do not have to shift
gears going downhill
What type of vehicles can get stuck on a railroad-highway crossing? - ans -Low
slung units (lowboy, car carrier, moving van, possum-belly livestock trailer).
How to turn quickly and safely: - ans -Do not apply brake while turning
, Do not turn more anymore than needed to clear whatever is in your way
Be prepared to counter steer
What should you do if an oncoming driver is in your way - ans -Steer all the way to
your right because there reaction will be to steer back into there lane
Why should u keep one set of wheels on the pavement - ans -It will help you
maintain control
Returning back on the road - ans -Hold wheel tightly and turn sharply enough to
get back on the road safely, do not try to get back on it gradually because tires
might grab unexpected
What methods can you use to break quickly and safely - ans -Controlled Braking
Stab Braking
Controlled Braking - ans -In this method you brake as hard as you can without
locking the brakes keeping steering wheel movements very small
Stab braking: - ans -Involves releasing the brakes only after the wheels lock up
and applying brakes again as soon as they lock up again
Why shouldn't you jam on the brakes - ans -Because it will only keep the wheels
locked up and cause a skid meaning you cannot control the vehicle
two reasons why hydraulic brakes fail - ans -Loss of hydraulic pressure
Brake fade on long
What should you do when you lose hydraulic pressure - ans -Downshift
Pump the brakes
Use the parking break
Find escape route
Signs of tire failure - ans -Sound (loud bang)
Vibraton
Feel
