ANS TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND

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Illinois CDL Drivers Test Questions & Answers 1.What is the most important reason for doing a vehicle inspection?

ANS SAFETY

2.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.

3.Name some key steering system parts.

ANS STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE

ROD, STEERING GEAR BOX, PITMAN ARM, DRAG LINK, STEERING RING

KNUCKLE, SPINDLE.

4.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

5.What three kinds of emergency equipment must you have?

ANS FIRE EXTIN- GUISHER, SPARE FUSES, WARNING DEVICES

(TRIANGLES) 1 / 3

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6.What is the minimum tread depth for front tires? For other tires?

ANS FRONT 4/32 REAR 2/32

7.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

8.What should wheel bearing seals be checked for?

ANS NOT LEAKING

9.How many red reflective triangles should you carry?ANS 3 10.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.

11.Why put the starter switch key in your pocket during the pre-trip inspec- tion?

ANS SO NO ONE CAN STEAL YOUR VEHICLE.

• Why should you back toward the driver's side?

ANS SO YOU CAN SEE BETTER. 2 / 3

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13.If stopped on a hill, how can you start moving without rolling back?

ANS PART- LY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR RIGHT

FOOT OFF THE BRAKE.

14.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.

15.What's the most important hand signal that you and the helper should agree on?

ANS STOP

16.What are the two special conditions where you should downshift?

ANS BE- FORE STARTING DOWN A HILL AND BEFORE ENTERING A

CURVE.

17.When should you downshift automatic transmissions?

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

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