General Knowledge 2

To extinguish an electrical fire,

Use water
Use the A:B:C extinguisher
Use the B:C extinguisher
Pull into a service station and wait for qualified firefighters.

Which of the following sentences about downshifting is true?

When you downshift for a curve, you should do it just before entering to the curve.
When double clutching, you should let the RPM's decrease while the clutch is released.
When you downshift for a curve, you should do so before you enter the curve.
All of the above.

You can find hazardous materials when seeing something on the container

Color
Shape
Label

Wich one about covering cargo is false?

You need to protect people.
You should look at your cargo in the mirrors all the time.
Flapping covers need not bee tied down as long as the bulk of the cargo is covered.
You need to protect the cargo from the weather no matter how.

The “Bridge clearance heights manage” height to pass under a bridge can change due to the wear of the road, paving, dirt dusk or abundant snow, is this true?

True
False

Which of these answers is correct about taking emergency actions or avoiding a crash?

Generally you can stop faster than turn to avoid a obstacle
To turn fast, you must have to hold the steeren wheel tightly
Stopping is always the safest thing to do in an emergency
You should always turn right

Which of these answers about backing a heavy commercial vehicle is true?

You must avoid backing whenever you can
It is safer back toward the right side of the truck than toward the driver's side
Helpers should be out of the driver's sight,and use only voice (spoken) signals to communicate with the driver
You must backing quikly

What is a pull-up?

A maneuver performed by a tow truck to pick up an overturned truck.
Pulling forward while backing a trailer to re position it.
An exercise that must be performed at a d.o.t. physical exam in order to get a C.D.L.
When pulling off the shoulder you pull up until the trailer is straight.

Wich one about covering cargo is false?

You need to protect people.
You should look at your cargo in the mirrors all the time.
Flapping covers need not bee tied down as long as the bulk of the cargo is covered.
You need to protect the cargo from the weather no matter how.

How does letting up on the brake release the brakes?

Some compressed air is let out of the system, causing the brake pads to disengage
The action releases the brake pads.
The system releases the brakes through a combination of air being released and the brake levers being loosened
Compressed air is pushed back into the air tanks

Tire fires are possibly caused by

Loose fuel connections and short circuits.
Under-inflated tires and duals that touch.
Duals that touch or improper fueling
Driver smoking and improperly loaded cargo

What is the minimum number of tie-downs for an entire flatbed load?

One
Two
Four
Six

Which of these sentences about the pre-trip inspection is true?

Leave the key in the starter switch so you cannot loose it while you are under the truck
If you need to pull the cab, be sure there are no loosen things so they won't fall and break something
If you are parking on the street, you should not walk toward the oncoming traffic

Name two whys and wherefores of tire fires?

Under-inflated tires and poor retreads.
Under-inflated tires and dual that touch.
Hot brakes and under-inflated tires.
Dual that touch and road debris.

If you try to downshift while coming down a mountain, you might?

wear out the clutch
get stuck in neutral
damage the engine
lose traction

Bridge formulas

Permits less maximum axle weight for axles that are far together
limit the weight-to-length ratio of a vehicle crossing a bridge. This is accomplished either by spreading weight over additional axles or by increasing the distance between axles.
Permits the same maximum axle weight for any distance between axles

To check the clutch/gearshift you must

Service brake
Emergency brake
Parking brake
Spring brake

Which of these statements about backing a heavy vehicle is true?

All of the above are true.
You should use a helper and communicate with hand signals.
You should back and turn toward the driver's side whenever possible
Backing is always dangerous.

What should you not do if you suspect that one of your vehicle’s tires has melted?

Continue driving until you are sure it was one of the tires on your vehicle that exploded.
Hold the steering wheel firmly.
Stay out of the brake.
Check all tires after stopping

The best type of driver is one _______________.

So slow
Offensive
Sober
First and defensive security.

Which of the following don’t provide an extra change of shift gears in trucks?

Automatic transmissions.
Auxiliary transmissions.
Multi-speed rear axles.
None of the above .

In some emergencies, you may have to drive off the road to avoid a collision with another vehicle. If possible, you should avoid

Keep a set of wheels on the pavement
Use the brake until your speed has dropped to approximately 20 mph.
Stop completely before returning to the road
All of the above

Select the one that’s not the correct use of the commercial vehicle lights?

Turn on the brake flash lights to keep away someone from the back of your truck
Turning on the lights during the day when the visibility is low because raining or snowing
Turn on the brake flash lights to warn someone you are slowing down
All of the above are correct uses.

When your Truck is involved in an accident, you must try to

Keep one empty lane between your vehicle and the other.
Stop all traffic in other lanes.
Honk your horn to warn other vehicles for 15 minutes.
Get it to the side of the road.

Talking about a pre-trip inspection which one is true?

If you are parking on the street, you should not walk toward the oncoming traffic.
If you need to pull the cab, be sure there are no loosen things so they won't fall and break something.
Leave the key in the starter switch so you cannot loose it while you are under the truck.
You should avoid backing whenever you can

Which of these statements about backing a heavy vehicle is true?

You should avoid backing whenever you can
It is safer back toward the right side of the truck than toward the driver's side
Helpers should be out of the driver's sight,and use only voice (spoken) signals to communicate with the driver

For vehicles transporting loose materials (sand, soil, gravel, etc) that can be dropped or fly away, you should put a cover when you are moving.

True
False

Whenever you drive at night, you should?

Make sure you are well rested.
Drink plenty of coffee.
Slow down.
Always drive with your high beams on.

To stop quickly and safely, what controlled braking methods could be used

Press the brake as hard as you can without locking the wheels
Press the brake as hard as you can to lock the wheels
Press the brakes and make large steering adjustments
Press the brakes but keep them released before and after making the steering adjustments. Press the brakes but keep them released before and after making the steering adjustments. Explanation of the answer

Who should know that materials found in the federal hazardous materials table are being transported

Only the sender should know
Only the driver should know.
The sender and the driver must know.
Everyone who handles the material should know

Select the one that’s not the correct use of the commercial vehicle lights?

The brakes will stop working
There is no effect on the braking system
The brake pedal will begin to shake
The emergency brakes will come on

When your vehicle is involved in an accident, you must try to

Keep one empty lane between your vehicle and the other.
Stop all traffic in other lanes.
Honk your horn to warn other vehicles for 15 minutes.
Get it to the side of the road.

Which of the following statements about “smooth bore” liquid tankers is false?

You must be extremely cautious, especially when starting.
There is nothing inside the tank that can slow down the flow of liquid.
Food products will possibly be transported in an unbaffled liquid tank.
Forward and back liquid surge is reduced.

To help you stay alert while driving, you should

Take short breaks before you get drowsy
Schedule, trips for hours you are normally asleep
Keep the cab silent and warm

What is the minimum air pressure for a functioning brake system?

Make sure the minimum operating pressure for a vehicle air-brake system is no less than 125 psi for a truck. Check that it takes no longer than1 minutes for air pressure to rise from 45 psi to 65 psi at 1000 to 1500 rpm. This is called the air pressure main rank limit.
Make sure the minimum operating pressure for a vehicle air-brake system is no less than 100 psi for a truck. Check that it takes no longer than 2 minutes for air pressure to rise from 85 psi to 100 psi at 600 to 900 rpm. This is called the air pressure buildup rate.
Make sure the minimum operating pressure for a vehicle air-brake system is no less than 65 psi for a truck. Check that it takes no longer than 4 minutes for air pressure to rise from 145 psi to 65 psi at 1150 to 1450 rpm. This is called the air pressure secure rate.
Make sure the minimum operating pressure for a vehicle air-brake system is no less than 125 psi for a truck. Check that it takes no longer than 3 minutes for air pressure to rise from 60 psi to 85 psi at 400 to 600 rpm. This is called the air pressure top rate.

Which of these sentences is true? (pre-trip inspection)

Leave the key in the starter switch so you cannot loose it while you are under the truck
If you need to pull the cab, be sure there are no loosen things so they won't fall and break something
If you are parking on the street, you should not walk toward the oncoming traffic
All inspection must be done with the engine running

Which of the consequently is not a rim defect?

Missing clamps, spacers, studs, or lugs.
Dual tires that come in contact with each other.
Rust around lug nuts.
Mismatched, bent, or cracked lock rings.

What is the reason you should make emergency plans when you see a hazard?

All hazards turn into emergencies
You will have less time to act if you see hazards before they become emergencies
You will have a plan to communicate the risk
You will have more time to act if you see hazards before they become emergencies

Which of these systems must receive more attention during an inspection in winter?

Steering
Exhaust system
Suspension
Lights

Some commercial vehicles semi-truck have automatic transmissions. Why is it important to select a low range when going to downgrade a hill?

To allow the transmission to shift up
To get greater engine braking
To prevent hydroplaning
To prevent a hydraulic brake failure

The distance you should see ahead of your vehicle is

1/4 mile at highway speed
1/2 mile at highway speed
1/8 mile at highway speed

When you are driving baffled liquid tanks,

Bulkheads are included which stop side to side liquid surge.
There is no risk of rollover at all.
Forward and backward liquid surge is controlled all times.
There is no risk involved in taking curves or making sharp turns at the posted limits anytime.

What should be the first step for a pre-trip inspection?

Starting the engine.
fasten seatbelt
Put the vehicle key in your pocket
Write a written report about the condition of the vehicle

Which fires can be put down with water?

Gasoline fires.
Electrical fires.
Tire fires.
Roof fires.

The blacks and white says you should watch _____ ahead interim driving?

12 to 15 seconds, at highway speeds it is about a quarter of a mile.
15 to 20 seconds, at highway speeds it is about a half of a mile.
9 to 12 seconds, at highway speeds it is about a quarter of a mile.
5 to 8 seconds, at highway speeds it is about an 8th of a mile.

Since you can not inspect sealed loads, you:

Can exceed gross weight and axle weight limits
Must be lower than limits by 50 pounds.
Therefore need special tie down devices
Should therefore check that you do not exceed gross weight and axle limits

Which of the consequently is the roughly important desire for doing a pre-trip inspection?

Because other drivers do it.
Safety for yourself and other road users.
To make sure nothing has been stolen from the vehicle.
To make sure the vehicle will make your destination.

Which should you check for looseness, sticking, damage or improper settings?

The diesel temperature in the tank
Steering wheel
The CB Bluetooth
the kingpin water reservoir

How does rain affect stopping distance?

In wet weather, stopping distances will be at least 2 times those required for stopping on dry roads
In wet weather, stopping distances will be at least 4 times those required for stopping on dry roads
In wet weather, stopping distances will be at least 8 times those required for stopping on dry roads
In wet weather, stopping distances new technology makes no difference driving in wet or dry roads

The ownership or use of drugs is allowed when?

The use of alcohol
Your doctor informs you that certain prescription medications will not affect your safe driving ability
The use of over-the-counter medications
Use of amphetamines

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