GENERAL KNOWLEDGE CDL

What is the most important reason for doing a vehicle inspection?

• Avoid tickets

• Reduce fuel use

• Ensure safety

• Clean the truck

What should you check during a trip?

• Only before stopping

• Pre-trip, during trip, and post-trip

• Only when you break down

• Only the engine

What three emergency items must be on board?

• Food, water, flashlight

• Flares, jumper cables, radio

• Fire extinguisher, spare fuses, warning devices

• First aid kit, fuel, blankets

What is the minimum tread depth for front tires?

• 2/32 inch

• 4/32 inch

• 5/32 inch

• 1/16 inch

What is the minimum tread depth for other tires?

• 2/32 inch

• 4/32 inch

• 6/32 inch

• 1/8 inch

What should you inspect at the front of the vehicle during a walk-around?

• Seatbelts and air vents

• Rear axle and battery box

• Lights, windshield, leaks, wipers

• Mirrors only

Wheel bearing seals should be checked for:

• Proper inflation

• Leaks

• Tightness

• Grease thickness

How many red reflective triangles should you carry?

• One

• Two

• Three

• Four

How do you test hydraulic brakes for leaks?

• Step hard and release immediately

• Pump brakes 3 times, hold 5 seconds, check pedal movement

• Drive fast and slam brakes

• Check fluid color

Why should you back toward the driver’s side?

• It's faster

• Legal requirement

• You can see better

• Less turning required