General Knowledge - Quiz Sample #1, 20 questions
To prevent a load from shifting, there should be at least one tiedown for every __ feet of cargo.
10
15
7
You are driving a 40-foot vehicle at 35mph. The road is dry and visibility is good. What is the least amount of space you should keep in front of your vehicle to be safe?
2 seconds.
4 seconds.
6 seconds.
Which of these statements about drinking alcohol is true?
A few beers have the same effect on driving as a few shots of whiskey or a few glasses of wine.
Coffee and fresh air will help a drinker sober up.
Not everyone who drinks is affected by alcohol.
While driving, ice builds up on your wipers and they no longer clean the windshield. You should:
Keep driving, and turn your defroster on. Drive slower until you can see again.
Keep driving, and spray the windshield with washer fluid.
Stop safely and fix the problem.
Which of these statements about driving in areas with strong winds is true?
Winds are a big problem when a truck comes out of tunnels.
You should drive alongside other vehicles to help break up the wind.
The lighter you vehicle, the less trouble you will have with the wind.
What is counter-steering?
Steering in the opposite direction from what other drivers expect you to.
Turning the wheel in a counterclockwise fashion.
Turning the wheel back in the other direction after steering to avoid a traffic emergency.
To help you stay alert while driving you should:
Schedule trips for hours you are normally asleep.
Take cold medicine, if you have a cold.
Take short breaks before you get drowsy.
You do not have a Hazardous Materials Endorsement on your Commercial Driver's License. You can drive a vehicle hauling hazardous materials when:
The cargo will be transported less than 100 miles.
The vehicle does not require placards.
A person who has the Hazardous Materials Endorsement rides with you.
Cargo inspections:
Are most often not the responsibilities of the driver.
Should be performed as part of your pre-trip inspection, again within the first 50 miles of your trip, then again after you have driven 3 hours or 150 miles, and after every break you take during driving.
Are needed only if hazardous materials are being hauled.
Retarders:
Cause extra brake wear.
Allow you to disconnect the steering axle brakes.
Can cause the drive wheels to skid when they have poor traction.
You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
The same gear you would use to climb the hill.
A lower gear than you would use to climb the hill.
Shift into neutral and coast.
Which of these statements about speed management is true?
Empty trucks always stop in shorter distance than fully loaded ones.
When you double your speed (go twice as fast), it will take twice the distance to stop.
You should choose a speed that lets you stop within the distance that you can see ahead.
Which of these best describes how you should use the brake pedal on a steep downhill grade?
Snubbing.
Repeated strong pressure, then release.
With stronger pressure as the vehicle goes downhill.
Which of these statements about double clutching and shifting is true?
Double clutching should not be used when the road is slippery.
Double clutching should only be used with a heavy load.
You can use the tachometer to tell you when to shift.
Which of these statements about using turn signals is true?
You do not need to use your turn signal when changing lanes in traffic on a four-lane highway.
When turning, you should signal early.
You should use your turn signal to mark your vehicle when it is pulled off on the side of the road.
Which of these statements about cargo loading is true?
The legal maximum weight allowed by a state can be considered safe for all driving conditions.
State laws dictate legal weight limits.
If the shipper loads the cargo, the driver is not responsible for overloading.
If your vehicle catches fire while you are driving, you should:
Park in an open area.
Park where a building or trees shelter your vehicle from the wind.
Increase your speed to put out the flames.
You are checking your tires for a pre-trip inspection. Which of these statements is true?
Tires of mismatched sizes should not be used on the same vehicle.
Radial and bias-ply tires can be used together on the same vehicle.
A tread depth of 2/32 inch is safe for the front tires.
You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?
It may be a slow-moving vehicle.
The vehicle is hauling hazardous material.
It is a law enforcement vehicle.
An en route inspection should include checking for:
Tire overheating and brake overheating.
Cargo secured properly.
Both of these are correct.
You’re driving in the right lane of a four-lane, undivided road. You come over a hill and find a car stopped ahead in your lane. You do not have room to stop. The hill blocks your view to the rear. The shoulder is clear. Which of these is most likely the best action to take?
Steer into the left lane.
Steer to the right.
Use hard braking and brace for collision.
Where or when should you test the stopping action of your service brakes?
In the parking lot when the vehicle is not moving.
When the vehicle is moving at about 5 mph.
At a special Brake Testing Center only.
Cargo covers:
Protect people from spilled cargo.
May be a safety requirement in some States.
Both of these are correct.
Which of these is not part of the pre-trip inspection of the engine compartment?
Valve clearance.
Condition of hoses.
Worn electrical wiring insulation.
High beams should be:
Used when it is safe and legal to do so.
Turned on when an oncoming driver does not dim his or her lights.
Dimmed at the time that you get within 100 feet of another vehicle.
Which of these is the most important thing to remember about emergency braking?
Disconnecting the steering axle brakes will help keep your vehicle in a straight line during emergency braking. ·
If the wheels are skidding, you cannot control the vehicle.
Never do it without downshifting first.
You must park on the side of a level, straight, two-lane road. Where should you place the reflective triangles?
One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear.
One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle.
One about 50 feet to the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle.
The road you are driving on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation?
Stop driving as soon as you can safely do so.
Downshift to stop.
Apply the brakes often to keep the linings dry.
Which of these statements about tires and hot-weather driving is true?
The air pressure of a tire decreases as the temperature of the tire increases.
If a tire is too hot to touch, you should drive on it to cool it off.
You should inspect your tires every two hours or every 100 miles when driving in very hot weather.
Your truck 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?
You can almost always turn to miss an obstacle more quickly than you can stop.
Stopping is always the safest action in a traffic emergency.
Leaving the road is more risky than hitting another vehicle.
What should you do when your vehicle hydroplanes?
Accelerate slightly.
Counter-steer hard.
Release the accelerator.
You are starting your vehicle from a stop. As you apply power to the driver wheels, they start to spin. You should:
Take your foot off the accelerator.
Press harder on the accelerator.
Try a lower gear.
Stab braking:
Should never be used.
Involves releasing the brakes only after the wheels lock up.
Involves steady pressure on the brake pedal without locking the wheels.
If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will:
Slide sideways and spin out.
Go straight ahead even if the steering wheel is turned.
Go to the right.
Which of these statements about accelerating is true?
Rough acceleration can cause mechanical damage.
You should feel a "jerking" motion if you are accelerating your vehicle properly.
When traction is poor, more power should be applied to the accelerator.
Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?
Heavy vehicles need larger gaps in traffic than cars.
The best way to cross traffic is to pull the vehicle partway across the road and block one lane while waiting for the other to clear.
Because heavy vehicles are easy to see, you can count on other drivers to move out of your way or slow down for you.
Which of these statements about staying alert to drive is true?
A half-hour break for coffee will do more to keep you alert than a half-hour nap.
There are drugs that can overcome fatigue.
Sleep is the only thing that can overcome fatigue.
You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best action to take?
Hard braking.
Steer to the right.
Prepare for impact.
Which of these statements about engine overheating is true?
If your engine overheats within 20 miles of the end of your trip, you should complete the trip and then check the problem.
You should never shut off an overheated engine until it cools.
You should never remove the radiator cap on a pressurized system until the system has cooled.
You are driving a truck with a manual transmission. You have to stop the truck on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion up the grade?
Keep the clutch slipping while slowly accelerating.
Use the parking brake to hold the vehicle until the clutch engages.
Let the vehicle roll straight backwards a few feet before you engage the clutch.
A vehicle is loaded with most of the weight on the steering axle. What may result?
Hard steering and possible damage to the tires.
Better handling.
Too little traction on the steering axle.
You are driving a 40-foot vehicle at 50 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?
3 seconds.
4 seconds.
5 seconds.
Which of these is a good thing to do when steering to avoid a crash?
Apply the brakes while turning.
Steer with one hand so that you can turn the wheel more quickly.
Do not turn any more than needed to clear what is in your way.
You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?
Rust around lug nuts may mean that they are loose.
Cracked wheels or rims can be used if they have been welded.
A vehicle can be safely driven with one missing lug nut on a wheel.
You do not have a Hazardous Materials Endorsement on your Commercial Driver's License. You are asked to deliver hazardous material in a placarded vehicle. You should:
Refuse to haul the load.
Take the placards off the vehicle.
Haul the load, but only to the nearest place where a driver with a Hazardous Materials Endorsement can take over.
As the Blood Alcohol Concentration (BAC) goes up, what happens?
The drinker more dearly sees how alcohol is affecting him/her.
Judgment and self-control are affected.
The drinker can sober up in less time.
If you need to leave the road in a traffic emergency, you should:
Try to get all wheels off the pavement.
Avoid braking until your speed has dropped to about 20mph.
Tap repeatedly on the brakes.
Which of these statements about downshifting for a long downhill grade is true?
It should not be done with an automatic transmission.
It allows engine compression and friction to help slow the vehicle.
The proper time to downshift is just after the vehicle starts down the hill.
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