1 Exampromax - Stuvia US 2025/2026
Illinois CDL Drivers Test Questions and
Answers (100% Correct Answers) Already
Graded A+
What is the most important reason for doing a vehicle inspection?
Ans: SAFETY
What things should you check during a trip?
Ans: TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND
ELECTRICAL CONNECTIONS TO TRAILER, TRAILER COUPLING
DEVICES, CARGO SECUREMENT DEVICES.
© 2025 Assignment Expert
Name some key steering system parts.
Exampromax - Stuvia US
Ans: 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.
Ans: 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?
Ans: FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES
(TRIANGLES)
What is the minimum tread depth for front tires?For other tires?
Ans: FRONT 4/32 REAR 2/32
Name some things you should check on the front of your vehicle during the
walk-around inspection.
Ans: CONDITION OF FRONT AXLE, STEERING SYSTEM,
WINDSHIELD, LIGHTS AND REFLECTORS
What should wheel bearing seals be checked for?
, 2 Exampromax - Stuvia US 2025/2026
Ans: NOT LEAKING
How many red reflective triangles should you carry?
Ans: 3
How do you test hydraulic brakes for leaks?
Ans: 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?
© 2025 Assignment Expert
Ans: SO NO ONE CAN STEAL YOUR VEHICLE.
Exampromax - Stuvia US
Why should you back toward the driver's side?
Ans: SO YOU CAN SEE BETTER.
If stopped on a hill, how can you start moving without rolling back?
Ans: PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR
RIGHT FOOT OFF THE BRAKE.
When backing, why is it important to use a helper?
Ans: 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?
Ans: STOP
What are the two special conditions where you should downshift?
Ans: BEFORE STARTING DOWN A HILL AND BEFORE ENTERING A
CURVE.
When should you downshift automatic transmissions?
, 3 Exampromax - Stuvia US 2025/2026
Ans: YOU CAN SELECT A LOW RANGE TO GET GREATER BRAKING
WHEN GOING DOWN GRADES.
Retarders keep you from skidding when the road is slippery. True or False?
Ans: FALSE
What are the two ways to know when to shift?
Ans: RPM AND MPH
How far ahead does the manual say you should look?
Ans: 12-15 SECONDS
© 2025 Assignment Expert
What are two main things to look for ahead?
Exampromax - Stuvia US
Ans: VEHICLES COMING ONTO THE HIGHWAY, INTO YOUR LANE
OR TURNING AND BRAKE LIGHTS.
What's your most important way to see the sides and rear of your vehicle?
Ans: CHECK YOUR MIRRORS.
What does "communicating" mean in safe driving?
Ans: SIGNAL YOUR INTENTIONS.
Where should your reflectors be placed when stopped on a divided
highway?
Ans: 10 FEET, 100 FEET, 200 FEET TOWARD THE APPROACHING
TRAFFIC.
What three things add up to total stopping distance?
Ans: PERCEPTION, REACTION, BRAKING.
If you go twice as fast, will your stopping distance increase by two or four
times?
Ans: FOUR
Empty trucks have the best braking. True or False?
Illinois CDL Drivers Test Questions and
Answers (100% Correct Answers) Already
Graded A+
What is the most important reason for doing a vehicle inspection?
Ans: SAFETY
What things should you check during a trip?
Ans: TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND
ELECTRICAL CONNECTIONS TO TRAILER, TRAILER COUPLING
DEVICES, CARGO SECUREMENT DEVICES.
© 2025 Assignment Expert
Name some key steering system parts.
Exampromax - Stuvia US
Ans: 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.
Ans: 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?
Ans: FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES
(TRIANGLES)
What is the minimum tread depth for front tires?For other tires?
Ans: FRONT 4/32 REAR 2/32
Name some things you should check on the front of your vehicle during the
walk-around inspection.
Ans: CONDITION OF FRONT AXLE, STEERING SYSTEM,
WINDSHIELD, LIGHTS AND REFLECTORS
What should wheel bearing seals be checked for?
, 2 Exampromax - Stuvia US 2025/2026
Ans: NOT LEAKING
How many red reflective triangles should you carry?
Ans: 3
How do you test hydraulic brakes for leaks?
Ans: 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?
© 2025 Assignment Expert
Ans: SO NO ONE CAN STEAL YOUR VEHICLE.
Exampromax - Stuvia US
Why should you back toward the driver's side?
Ans: SO YOU CAN SEE BETTER.
If stopped on a hill, how can you start moving without rolling back?
Ans: PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR
RIGHT FOOT OFF THE BRAKE.
When backing, why is it important to use a helper?
Ans: 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?
Ans: STOP
What are the two special conditions where you should downshift?
Ans: BEFORE STARTING DOWN A HILL AND BEFORE ENTERING A
CURVE.
When should you downshift automatic transmissions?
, 3 Exampromax - Stuvia US 2025/2026
Ans: YOU CAN SELECT A LOW RANGE TO GET GREATER BRAKING
WHEN GOING DOWN GRADES.
Retarders keep you from skidding when the road is slippery. True or False?
Ans: FALSE
What are the two ways to know when to shift?
Ans: RPM AND MPH
How far ahead does the manual say you should look?
Ans: 12-15 SECONDS
© 2025 Assignment Expert
What are two main things to look for ahead?
Exampromax - Stuvia US
Ans: VEHICLES COMING ONTO THE HIGHWAY, INTO YOUR LANE
OR TURNING AND BRAKE LIGHTS.
What's your most important way to see the sides and rear of your vehicle?
Ans: CHECK YOUR MIRRORS.
What does "communicating" mean in safe driving?
Ans: SIGNAL YOUR INTENTIONS.
Where should your reflectors be placed when stopped on a divided
highway?
Ans: 10 FEET, 100 FEET, 200 FEET TOWARD THE APPROACHING
TRAFFIC.
What three things add up to total stopping distance?
Ans: PERCEPTION, REACTION, BRAKING.
If you go twice as fast, will your stopping distance increase by two or four
times?
Ans: FOUR
Empty trucks have the best braking. True or False?
