CDL Permit Test Questions With Solved
Solutions .
What is the most important reason for doing a vehicle inspection - Answer To ensure the vehicle is safe
to drive and roadworthy.
What things should you check during a trip - Answer Tires, brakes, lights, connections to trailer, trailer
coupling devices, cargo securement devices(tarps, canvass, or straps)
Name some key steering system parts - Answer Steering wheel, steering shaft, gear box, hydraulic fluid
reservoir, pitman arm, drag link, steering knuckle, spindle, power steering cylinder, steering arm, tie rod
Name some suspension system defects - Answer Missing or broken leaf springs, leaking shock
absorbers, broken spring hangers, torque rod (arm, ubolts, spring hangers, or other axle positioning
parts) cracked or damaged
Name three kinds of emergency equipment you must have - Answer Fire extinguisher, 3 red triangles,
spare fuses, flare
What is the minimum tread depth for front tires? For other tires? - Answer 4/32" for front tires, 2/32"
for all others
Name some things you should check on the front of your vehicle during the walk around inspection -
Answer Condition of axle and steering system (grab for looseness), condition of the windshield
(clean/dirty, damaged, wiper arms, wiper blades, and lights & reflectors (amber at front for clearance
and reflectors, white or amber for turn signal)
What should wheel bearing seals be checked for? - Answer Leaks
How many red reflective triangles should you carry? - Answer Three
, How do you test hydraulic brakes for leaks? - Answer Pump three times, hold brake down for 5
seconds. Brakes should hold, if not there is a problem.
Why put the starter switch key in your
pocket during the pre-trip inspection? - Answer So no one moves the truck while you are inspecting it.
Why should you back toward the driver's
side? - Answer It is safer because the driver can see more
If stopped on a hill, how can you start
moving without rolling back? - Answer Engage parking brake or clutch before removing foot from brake
When backing, why is it important to use a
helper? - Answer The helper can see more than the driver, including blind spots, safer
What's the most important hand signal that
you and the helper should agree on? - Answer Stop
What are the two special conditions where
you should downshift? - Answer Before a downward grade, and slowing for a curve
When should you downshift automatic
transmissions? - Answer Before coming to a downward grade
Retarders keep you from skidding when
the road is slippery. True or False? - Answer False
What are the two ways to know when to
shift? - Answer RPM or MPH
Solutions .
What is the most important reason for doing a vehicle inspection - Answer To ensure the vehicle is safe
to drive and roadworthy.
What things should you check during a trip - Answer Tires, brakes, lights, connections to trailer, trailer
coupling devices, cargo securement devices(tarps, canvass, or straps)
Name some key steering system parts - Answer Steering wheel, steering shaft, gear box, hydraulic fluid
reservoir, pitman arm, drag link, steering knuckle, spindle, power steering cylinder, steering arm, tie rod
Name some suspension system defects - Answer Missing or broken leaf springs, leaking shock
absorbers, broken spring hangers, torque rod (arm, ubolts, spring hangers, or other axle positioning
parts) cracked or damaged
Name three kinds of emergency equipment you must have - Answer Fire extinguisher, 3 red triangles,
spare fuses, flare
What is the minimum tread depth for front tires? For other tires? - Answer 4/32" for front tires, 2/32"
for all others
Name some things you should check on the front of your vehicle during the walk around inspection -
Answer Condition of axle and steering system (grab for looseness), condition of the windshield
(clean/dirty, damaged, wiper arms, wiper blades, and lights & reflectors (amber at front for clearance
and reflectors, white or amber for turn signal)
What should wheel bearing seals be checked for? - Answer Leaks
How many red reflective triangles should you carry? - Answer Three
, How do you test hydraulic brakes for leaks? - Answer Pump three times, hold brake down for 5
seconds. Brakes should hold, if not there is a problem.
Why put the starter switch key in your
pocket during the pre-trip inspection? - Answer So no one moves the truck while you are inspecting it.
Why should you back toward the driver's
side? - Answer It is safer because the driver can see more
If stopped on a hill, how can you start
moving without rolling back? - Answer Engage parking brake or clutch before removing foot from brake
When backing, why is it important to use a
helper? - Answer The helper can see more than the driver, including blind spots, safer
What's the most important hand signal that
you and the helper should agree on? - Answer Stop
What are the two special conditions where
you should downshift? - Answer Before a downward grade, and slowing for a curve
When should you downshift automatic
transmissions? - Answer Before coming to a downward grade
Retarders keep you from skidding when
the road is slippery. True or False? - Answer False
What are the two ways to know when to
shift? - Answer RPM or MPH
