Knowledge Test 4

1. You are starting your vehicle in motion from a stop. As you apply power to the drive wheels, they start to spin. You should:
Take your foot off the accelerator and apply the brakes.
Press harder on the accelerator.
Take your foot off the accelerator.
Try a lower gear.

2. You should use your mirrors to check:
Traffic gaps before you merge.
The condition of the tires and cargo.
Where the rear of your vehicle is while you make turns.
All of the above.

3. The proper way to hold a steering wheel is at clock positions ____ and ____.
6 and 12
3 and 9
4:30 and 7:30
1:30 and 10:30

4. Cargo inspections:
Should be performed after every break you take while driving.
Are only needed if hazardous materials are being hauled
Not the responsibility of the driver.
Should be performed every 6 hours or 300-miles.

5. Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?
Lack of braking power
Trailer jackknife
Wheel lockup
All of the above

6. How do you test hydraulic brakes for leaks?
Measure the free play in the pedal with a ruler.
With the vehicle stopped, pump the pedal three times, apply firm pressure for 5 seconds, then hold and see if the pedal moves.
Step on the brake pedal and the accelerator at the same time and see if the vehicle moves.
Move the vehicle slowly and see if it stops when the brake is applied.

7. Which of these is a good rule to follow when driving at night.
Keep your instrument lights bright.
Look directly at oncoming headlights only briefly.
Keep your speed slow enough that you can stop within the range of your headlights.
Wear sun glasses

8. A vehicle is loaded with very little weight on the drive axle. What may result?
Damage to drive axle tires.
A need to disconnect the steering axle brakes.
Better handling.
Poor traction

9. The key principle in balancing cargo weight is to keep the load:
On the side away from most traffic.
Balanced in the cargo area
To the front
To the rear

10. Which of these statements about using mirrors is true?
There are blind spots that your mirrors cannot show you.
You should check your mirrors twice for a lane change.
You should look at a mirror for several seconds at a time.
Convex mirrors make things look closer than they really are.

11. Which of these statements about cold weather driving is true?
In snow storms, wiper blades should be adjusted so that they do not make direct contact with the windshield.
Exhaust system leaks are less dangerous in cold weather.
There is no need to worry about engine overheating when the weather is very cold.
Windshield washer antifreeze should be added to the washer reservoir.

12. The most important reason for being alert to hazards is so:
You will have time to plan your escape if the hazard becomes an emergency.
Accident reports will be accurate.
Law enforcement personnel can be called.
You can help impaired drivers.

13. Which of these is a good rule to follow when using a fire extinguisher?
Stay downwind of the fire.
Keep it as close to the fire as possible.
Aim at the base of the fire.
All the above.

14. Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?
It doesn't make any difference as long as you drive slow.
None of the above.

15. You have left the road in an emergency condition, it is impossible for you to come to a stop prior to returning to the road, which of the following is the best action to take?
Stop and turn your vehicle around before entering the road.
Make sure the road is clear, and continue to return to the road.
Reduce your speed to 20 mph or less before returning to the road.
All the above are true.