Kentucky CDL Permit Study Set Exam
With Solutions Guaranteed Pass.
What is the most important reason for doing a vehicle inspection? - Answer safety
What things should you check during a trip? - Answer instruments, air pressure gauge, temp gauge,
pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
Name some key steering system parts. - Answer steering wheel, tie rod, steering shaft, hydraulic fluid
reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm, power steering
cylinder
Name some suspension system defects - Answer spring hangers that allow movement of axle from
proper position, cracked or broken spring hangers, missing or broken leaves in any leaf spring, leaking
shock absorbers, air suspension systems that are damaged and or leaking, any parts of the suspension or
frame that is cracked or broden
What three kinds of emergency equipment must you have? - Answer Fire extinguisher, spare electrical
fuses , warning devices for parked vehicles.
What is the minimum tread depth for front tires? For other tires? - Answer 4/32" for front tires, 2/32"
on other tires
Name some things you should check on the front of your vehicle during the walk around inspection? -
Answer Condition of front axle, Condition of steering system, Condition of windshield, Lights and
reflectors.
What should wheel bearing seals be checked for? - Answer leaks
How many red reflective triangles should you carry? - Answer 3 red reflective triangles
, How do you test hydraulic brakes for leaks? - Answer Pump the brake pedal three times, then apply
firm pressure to the pedal and hold for five seconds. The pedal should not move.
Why put the starter switch key in your pocket during the vehicle inspection? - Answer So it cannot be
started or running during the walk around inspection
Why should you back toward the driver's side? - Answer So you can see better
backing toward the right side is very dangerous because you cant see as well.
If stopped on a hill, how can you start moving without rolling back? - Answer partly engage the clutch
before you take your foot off the brake, put on the parking brake whenever necessary to keep from
rolling back
When backing, why is it important to use a helper? - Answer There are blind spots you won't be able to
see.
What's the most important hand signal that you and the helper should agree on? - Answer a signal for
STOP
What are the two special conditions where you should downshift? - Answer before starting down a hill,
before entering a curve
When should you downshift automatic transmissions? - Answer when going down grades/downhill
Retarders keep you from skidding when the road is slippery. True or False? - Answer False. Retarders
help slow a vehicle, reducing the need for using your brakes. When your drive wheels have poor traction,
the retarder may cause them to skid. Therefore, you should turn the retarder off whenever the road is
wet, icy, or snow covered
What are the two ways to know when to shift? - Answer Use engine speed (rpm) or road speed (mph)