CDL General Knowledge
When you are in a 60-foot vehicle, how much space should you maintain in front of you at highway
speeds? ✔️ Seven seconds
What is the first thing to do if your vehicle catches fire while driving? ✔️ Pull off the road and park in an
open area
The best way to put out a fire is to: ✔️ Stand upwind and spray the base of the fire
What are some causes of vehicle fires (3): ✔️
- Spilled fuel
- Short circuits
- Driver smoking
Safe drivers must maintain space around their vehicles for the following reasons (3): ✔️
- In case you must stop suddenly
- In case there are cars following too closely
- In case there is an obstacle in the road
Hydroplaning can occur when you drive through water or slush. If you experience hydroplaning you
should: ✔️ Release the accelerator and push in the clutch
When making a right-hand turn, you should always: ✔️ Keep the rear of your vehicle close to the curb
A front wheel skid is usually caused by (3): ✔️
- Driving too fast for conditions
- Lack of tread on the front tires
- Cargo improperly loaded
, Driving at night is more dangerous because of the following (3): ✔️
- Most people are less alert at night due to fatigue
- Headlights often cause glare which can blind drivers
- There are more drunk drivers at night
How often should you check your cargo (3)? ✔️
- Within 25 miles after beginning a trip
- After you have driven for three hours
- After you take a break
An engine retarder is designed to: ✔️ Slow the vehicle down without using brakes
When should tires be replaced (3)? ✔️
- When the tread separates
- When there are broken valve stems
- If the tread depth on your front tires is less than 4/32 deep
In the event of a tire failure, you should: ✔️ Stay off the brake and hold the steering wheel firmly
Your vehicle is going down a long hill and your brakes begin to fail. What should you do? ✔️ Look for an
escape ramp or an escape route
The definition of a commercial motor vehicle is (3): ✔️
- A vehicle with a gross weight over 26,001 lbs
- A vehicle transporting hazardous materials
- A vehicle transporting 16 or more passengers
When you are in a 60-foot vehicle, how much space should you maintain in front of you at highway
speeds? ✔️ Seven seconds
What is the first thing to do if your vehicle catches fire while driving? ✔️ Pull off the road and park in an
open area
The best way to put out a fire is to: ✔️ Stand upwind and spray the base of the fire
What are some causes of vehicle fires (3): ✔️
- Spilled fuel
- Short circuits
- Driver smoking
Safe drivers must maintain space around their vehicles for the following reasons (3): ✔️
- In case you must stop suddenly
- In case there are cars following too closely
- In case there is an obstacle in the road
Hydroplaning can occur when you drive through water or slush. If you experience hydroplaning you
should: ✔️ Release the accelerator and push in the clutch
When making a right-hand turn, you should always: ✔️ Keep the rear of your vehicle close to the curb
A front wheel skid is usually caused by (3): ✔️
- Driving too fast for conditions
- Lack of tread on the front tires
- Cargo improperly loaded
, Driving at night is more dangerous because of the following (3): ✔️
- Most people are less alert at night due to fatigue
- Headlights often cause glare which can blind drivers
- There are more drunk drivers at night
How often should you check your cargo (3)? ✔️
- Within 25 miles after beginning a trip
- After you have driven for three hours
- After you take a break
An engine retarder is designed to: ✔️ Slow the vehicle down without using brakes
When should tires be replaced (3)? ✔️
- When the tread separates
- When there are broken valve stems
- If the tread depth on your front tires is less than 4/32 deep
In the event of a tire failure, you should: ✔️ Stay off the brake and hold the steering wheel firmly
Your vehicle is going down a long hill and your brakes begin to fail. What should you do? ✔️ Look for an
escape ramp or an escape route
The definition of a commercial motor vehicle is (3): ✔️
- A vehicle with a gross weight over 26,001 lbs
- A vehicle transporting hazardous materials
- A vehicle transporting 16 or more passengers
