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Knowledge Test 3

1. Which of these statements about brakes is true.
Brake drums cool very quickly when the vehicle is moving very fast.
Brakes have more stopping power when they get very hot.
The heavier a vehicle or the faster it is moving, the more heat the brakes have to absorb to stop it.
All of the above are true.

2. What should you do when your vehicle hydroplanes?
Release the accelerator.
Start stab braking.
Counter steer hard.
Accelerate slightly.

3. Which fires can you use water to put out?
Gasoline fires.
Tire fires.
Electrical fires.
All of the above.

4. Your vehicle is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?
Stopping is always the safest action in a traffic emergency.
Open the door and jump out if you have time.
Heavy vehicles can almost always turn more quickly than they can stop.
Leaving the road is always more risky that hitting another vehicle.

5. Which of these is a sign of tire failure?
Steering that feels heavy.
A loud bang.
All of the above.

6. Which of these statements about drinking alcohol is true?
Some people are not affected by drinking.
A few beers have the same effect on driving as a few shots of whisky.
Coffee and fresh air can sober a person up.
All of the above are true.

7. Which of these can help you stay alert while driving?
Taking short breaks before you are drowsy.
Keeping the cab warm.
Taking a cold pill.
Scheduling trips during hours that you are normally asleep.

8. Which one of these is not part of the check of the engine compartment done for a pre trip inspection?
Worn wiring insulation.
Engine oil level.
Condition of belts and hoses.
Valve clearance.

9. According to the driver's manual, why should you limit the use of your horn?
It wears down the battery.
It can startle other drivers.
The horn is not a good way to let others know you're there.
You should keep both hands tightly gripping the steering wheel.

10. You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do?
Pump the brake pedal.
Down shift.
Look for an escape ramp or escape route.
All of the above.

11. How far should a driver look ahead of the vehicle while driving?
6-9 seconds
9-12 seconds
12-15 seconds
18-21 seconds

12. Which of these statements about cargo loading is true?
State laws dictate legal weight limits.
Slight overloading of a vehicle can make its brakes work better.
If the shipper loads cargo, the driver is not responsible for overloading.
The legal maximum weight allowed by a state can be considered safe for all driving conditions.

13. Which of these statements about marking a stopped vehicle is true?
The vehicle?s tail lights should be kept on to warn other drivers.
If a hill or curve keeps drivers behind you from seeing the vehicle within 500 feet, the rear reflective triangle should be moved back down the road to give adequate warning.
You do not need to put out reflective triangles unless the vehicle will be stopped for 30 minutes or more.
All of the above are true.

14. You are driving a 40 foot vehicle at 45 MPH. Driving conditions are ideal (dry pavement, good visibility). What is the least amount of space that you should keep in front of your vehicle to be safe?
2 seconds
3 seconds
4 seconds
5 seconds

15. The amount of liquid to load into a tank depends on:
The weight of the liquid.
The legal weight limits.
The amount of liquid will expand in transit.
All of the above