Illinois CDL Drivers Test (These are the exact questions and answers from the Illinois CDL
Commercial Driver's License Study Guide) Questions With Complete Solutions
SAFETY - (ANSWER)What is the most important reason for doing a vehicle inspection?
TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND ELECTRICAL CONNECTIONS TO TRAILER, TRAILER
COUPLING DEVICES, CARGO SECUREMENT DEVICES. - (ANSWER)What things should you check during a
trip?
STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE ROD, STEERING GEAR BOX, PITMAN
ARM, DRAG LINK, STEERING RING KNUCKLE, SPINDLE. - (ANSWER)Name some key steering system parts.
SPRING HANGERS THAT MOVE, CRACKED OR BROKEN SPRING HANGERS, MISSING OR BROKEN LEAVES,
LEAKING SHOCK ABSORBERS, TORQUE ROD ARM - (ANSWER)Name some suspension system defects.
FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES (TRIANGLES) - (ANSWER)What three kinds of
emergency equipment must you have?
FRONT 4/32 REAR 2/32 - (ANSWER)What is the minimum tread depth for front tires?For other tires?
CONDITION OF FRONT AXLE, STEERING SYSTEM, WINDSHIELD, LIGHTS AND REFLECTORS -
(ANSWER)Name some things you should check on the front of your vehicle during the walk-around
inspection.
NOT LEAKING - (ANSWER)What should wheel bearing seals be checked for?
3 - (ANSWER)How many red reflective triangles should you carry?
PUMP BREAK PEDAL 3 TIMES, THEN APPLY FIRM PRESSURE TO PEDAL AND HOLD FOR 5 SECONDS. THE
PEDAL SHOULD NOT MOVE. - (ANSWER)How do you test hydraulic brakes for leaks?
SO NO ONE CAN STEAL YOUR VEHICLE. - (ANSWER)Why put the starter switch key in your pocket during
the pre-trip inspection?
, Illinois CDL Drivers Test (These are the exact questions and answers from the Illinois CDL
Commercial Driver's License Study Guide) Questions With Complete Solutions
SO YOU CAN SEE BETTER. - (ANSWER)Why should you back toward the driver's side?
PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR RIGHT FOOT OFF THE BRAKE. - (ANSWER)If
stopped on a hill, how can you start moving without rolling back?
SO THEY CAN HELP YOU SEE AND SO THEY CAN CHECK YOUR BLIND SPOTS. - (ANSWER)When backing,
why is it important to use a helper?
STOP - (ANSWER)What's the most important hand signal that you and the helper should agree on?
BEFORE STARTING DOWN A HILL AND BEFORE ENTERING A CURVE. - (ANSWER)What are the two special
conditions where you should downshift?
YOU CAN SELECT A LOW RANGE TO GET GREATER BRAKING WHEN GOING DOWN GRADES. -
(ANSWER)When should you downshift automatic transmissions?
FALSE - (ANSWER)Retarders keep you from skidding when the road is slippery. True or False?
RPM AND MPH - (ANSWER)What are the two ways to know when to shift?
12-15 SECONDS - (ANSWER)How far ahead does the manual say you should look?
VEHICLES COMING ONTO THE HIGHWAY, INTO YOUR LANE OR TURNING AND BRAKE LIGHTS. -
(ANSWER)What are two main things to look for ahead?
CHECK YOUR MIRRORS. - (ANSWER)What's your most important way to see the sides and rear of your
vehicle?
SIGNAL YOUR INTENTIONS. - (ANSWER)What does "communicating" mean in safe driving?
Commercial Driver's License Study Guide) Questions With Complete Solutions
SAFETY - (ANSWER)What is the most important reason for doing a vehicle inspection?
TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND ELECTRICAL CONNECTIONS TO TRAILER, TRAILER
COUPLING DEVICES, CARGO SECUREMENT DEVICES. - (ANSWER)What things should you check during a
trip?
STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE ROD, STEERING GEAR BOX, PITMAN
ARM, DRAG LINK, STEERING RING KNUCKLE, SPINDLE. - (ANSWER)Name some key steering system parts.
SPRING HANGERS THAT MOVE, CRACKED OR BROKEN SPRING HANGERS, MISSING OR BROKEN LEAVES,
LEAKING SHOCK ABSORBERS, TORQUE ROD ARM - (ANSWER)Name some suspension system defects.
FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES (TRIANGLES) - (ANSWER)What three kinds of
emergency equipment must you have?
FRONT 4/32 REAR 2/32 - (ANSWER)What is the minimum tread depth for front tires?For other tires?
CONDITION OF FRONT AXLE, STEERING SYSTEM, WINDSHIELD, LIGHTS AND REFLECTORS -
(ANSWER)Name some things you should check on the front of your vehicle during the walk-around
inspection.
NOT LEAKING - (ANSWER)What should wheel bearing seals be checked for?
3 - (ANSWER)How many red reflective triangles should you carry?
PUMP BREAK PEDAL 3 TIMES, THEN APPLY FIRM PRESSURE TO PEDAL AND HOLD FOR 5 SECONDS. THE
PEDAL SHOULD NOT MOVE. - (ANSWER)How do you test hydraulic brakes for leaks?
SO NO ONE CAN STEAL YOUR VEHICLE. - (ANSWER)Why put the starter switch key in your pocket during
the pre-trip inspection?
, Illinois CDL Drivers Test (These are the exact questions and answers from the Illinois CDL
Commercial Driver's License Study Guide) Questions With Complete Solutions
SO YOU CAN SEE BETTER. - (ANSWER)Why should you back toward the driver's side?
PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR RIGHT FOOT OFF THE BRAKE. - (ANSWER)If
stopped on a hill, how can you start moving without rolling back?
SO THEY CAN HELP YOU SEE AND SO THEY CAN CHECK YOUR BLIND SPOTS. - (ANSWER)When backing,
why is it important to use a helper?
STOP - (ANSWER)What's the most important hand signal that you and the helper should agree on?
BEFORE STARTING DOWN A HILL AND BEFORE ENTERING A CURVE. - (ANSWER)What are the two special
conditions where you should downshift?
YOU CAN SELECT A LOW RANGE TO GET GREATER BRAKING WHEN GOING DOWN GRADES. -
(ANSWER)When should you downshift automatic transmissions?
FALSE - (ANSWER)Retarders keep you from skidding when the road is slippery. True or False?
RPM AND MPH - (ANSWER)What are the two ways to know when to shift?
12-15 SECONDS - (ANSWER)How far ahead does the manual say you should look?
VEHICLES COMING ONTO THE HIGHWAY, INTO YOUR LANE OR TURNING AND BRAKE LIGHTS. -
(ANSWER)What are two main things to look for ahead?
CHECK YOUR MIRRORS. - (ANSWER)What's your most important way to see the sides and rear of your
vehicle?
SIGNAL YOUR INTENTIONS. - (ANSWER)What does "communicating" mean in safe driving?
