Illinois CDL Drivers Test Questions With
Correct Answers
What is the most important reason for doing a vehicle inspection? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-SAFETY
|
What things should you check during a trip? - CORRECT ANSWER✔✔-
| | | | | | | | | |
TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND ELECTRICAL
| | | | | | | |
CONNECTIONS TO TRAILER, TRAILER COUPLING DEVICES, CARGO
| | | | | | |
SECUREMENT DEVICES. |
Name some key steering system parts. - CORRECT ANSWER✔✔-
| | | | | | | |
STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE ROD,
| | | | | | | | |
STEERING GEAR BOX, PITMAN ARM, DRAG LINK, STEERING RING
| | | | | | | | |
KNUCKLE, SPINDLE. |
Name some suspension system defects. - CORRECT ANSWER✔✔-
| | | | | | |
SPRING HANGERS THAT MOVE, CRACKED OR BROKEN SPRING
| | | | | | | |
HANGERS, MISSING OR BROKEN LEAVES, LEAKING SHOCK ABSORBERS,
| | | | | | | |
TORQUE ROD ARM | |
,What three kinds of emergency equipment must you have? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES | | | | | |
(TRIANGLES)
What is the minimum tread depth for front tires?For other tires? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-FRONT 4/32 REAR 2/32
| | | |
Name some things you should check on the front of your vehicle during
| | | | | | | | | | | | |
the walk-around inspection. - CORRECT ANSWER✔✔-CONDITION OF
| | | | | | |
FRONT AXLE, STEERING SYSTEM, WINDSHIELD, LIGHTS AND REFLECTORS
| | | | | | |
What should wheel bearing seals be checked for? - CORRECT
| | | | | | | | | |
ANSWER✔✔-NOT LEAKING |
How many red reflective triangles should you carry? - CORRECT
| | | | | | | | | |
ANSWER✔✔-3
How do you test hydraulic brakes for leaks? - CORRECT ANSWER✔✔-
| | | | | | | | | |
PUMP BREAK PEDAL 3 TIMES, THEN APPLY FIRM PRESSURE TO PEDAL
| | | | | | | | | | |
AND HOLD FOR 5 SECONDS. THE PEDAL SHOULD NOT MOVE.
| | | | | | | | |
Why put the starter switch key in your pocket during the pre-trip
| | | | | | | | | | | |
inspection? - CORRECT ANSWER✔✔-SO NO ONE CAN STEAL YOUR
| | | | | | | | |
VEHICLE.
, Why should you back toward the driver's side? - CORRECT ANSWER✔✔-
| | | | | | | | | |
SO YOU CAN SEE BETTER.
| | | |
If stopped on a hill, how can you start moving without rolling back? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE
| | | | | | | |
YOUR RIGHT FOOT OFF THE BRAKE.
| | | | |
When backing, why is it important to use a helper? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-SO THEY CAN HELP YOU SEE AND SO THEY CAN CHECK | | | | | | | | | | |
YOUR BLIND SPOTS.
| |
What's the most important hand signal that you and the helper should
| | | | | | | | | | | |
agree on? - CORRECT ANSWER✔✔-STOP
| | | |
What are the two special conditions where you should downshift? -
| | | | | | | | | | |
CORRECT ANSWER✔✔-BEFORE STARTING DOWN A HILL AND BEFORE
| | | | | | | |
ENTERING A CURVE. | |
When should you downshift automatic transmissions? - CORRECT
| | | | | | | |
ANSWER✔✔-YOU CAN SELECT A LOW RANGE TO GET GREATER | | | | | | | | |
BRAKING WHEN GOING DOWN GRADES.
| | | |
Correct Answers
What is the most important reason for doing a vehicle inspection? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-SAFETY
|
What things should you check during a trip? - CORRECT ANSWER✔✔-
| | | | | | | | | |
TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND ELECTRICAL
| | | | | | | |
CONNECTIONS TO TRAILER, TRAILER COUPLING DEVICES, CARGO
| | | | | | |
SECUREMENT DEVICES. |
Name some key steering system parts. - CORRECT ANSWER✔✔-
| | | | | | | |
STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE ROD,
| | | | | | | | |
STEERING GEAR BOX, PITMAN ARM, DRAG LINK, STEERING RING
| | | | | | | | |
KNUCKLE, SPINDLE. |
Name some suspension system defects. - CORRECT ANSWER✔✔-
| | | | | | |
SPRING HANGERS THAT MOVE, CRACKED OR BROKEN SPRING
| | | | | | | |
HANGERS, MISSING OR BROKEN LEAVES, LEAKING SHOCK ABSORBERS,
| | | | | | | |
TORQUE ROD ARM | |
,What three kinds of emergency equipment must you have? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES | | | | | |
(TRIANGLES)
What is the minimum tread depth for front tires?For other tires? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-FRONT 4/32 REAR 2/32
| | | |
Name some things you should check on the front of your vehicle during
| | | | | | | | | | | | |
the walk-around inspection. - CORRECT ANSWER✔✔-CONDITION OF
| | | | | | |
FRONT AXLE, STEERING SYSTEM, WINDSHIELD, LIGHTS AND REFLECTORS
| | | | | | |
What should wheel bearing seals be checked for? - CORRECT
| | | | | | | | | |
ANSWER✔✔-NOT LEAKING |
How many red reflective triangles should you carry? - CORRECT
| | | | | | | | | |
ANSWER✔✔-3
How do you test hydraulic brakes for leaks? - CORRECT ANSWER✔✔-
| | | | | | | | | |
PUMP BREAK PEDAL 3 TIMES, THEN APPLY FIRM PRESSURE TO PEDAL
| | | | | | | | | | |
AND HOLD FOR 5 SECONDS. THE PEDAL SHOULD NOT MOVE.
| | | | | | | | |
Why put the starter switch key in your pocket during the pre-trip
| | | | | | | | | | | |
inspection? - CORRECT ANSWER✔✔-SO NO ONE CAN STEAL YOUR
| | | | | | | | |
VEHICLE.
, Why should you back toward the driver's side? - CORRECT ANSWER✔✔-
| | | | | | | | | |
SO YOU CAN SEE BETTER.
| | | |
If stopped on a hill, how can you start moving without rolling back? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE
| | | | | | | |
YOUR RIGHT FOOT OFF THE BRAKE.
| | | | |
When backing, why is it important to use a helper? - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-SO THEY CAN HELP YOU SEE AND SO THEY CAN CHECK | | | | | | | | | | |
YOUR BLIND SPOTS.
| |
What's the most important hand signal that you and the helper should
| | | | | | | | | | | |
agree on? - CORRECT ANSWER✔✔-STOP
| | | |
What are the two special conditions where you should downshift? -
| | | | | | | | | | |
CORRECT ANSWER✔✔-BEFORE STARTING DOWN A HILL AND BEFORE
| | | | | | | |
ENTERING A CURVE. | |
When should you downshift automatic transmissions? - CORRECT
| | | | | | | |
ANSWER✔✔-YOU CAN SELECT A LOW RANGE TO GET GREATER | | | | | | | | |
BRAKING WHEN GOING DOWN GRADES.
| | | |
