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40 Ft Questions > 40ft Question S > Flashcards

40ft Question S Flashcards

1
Q

How should the Hub oil levels be?

A

Ok. No leaks

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2
Q

What two things should you check when inspecting the brakes?

A

Test parking brakes and test service brake and stopping action.

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3
Q

How often should a safety inspection be done on the truck/trailer?

A

Fist 50 miles of the trip and 150 miles or every three hours.

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4
Q

What are the two ways of knowing when to shift?

A

Use engine speed (rpm) and use road speed (mph)

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5
Q

What are special conditions when you should downshift?

A

Before starting down hill or before entering a curve.

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6
Q

When using automatic transmissions, what tool can you use to select a low range when going down grades?

A

Engine brake

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7
Q

What are four types of retarders and what do they do?

A

Exhaust engine hydraulic and electric. They help slow down a vehicle reducing the need to use brakes .

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8
Q

What should you do when making tight manuvers?

A

Check your mirrors often and make sure you have enough clearance.

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9
Q

What should you do when stopped in a two lane road carrying traffic both ways?

A

Place warning devices 10ft front or rear and 100ft in front and rear.

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10
Q

Stopping distance formula?

A

Perception distance + reaction distance + braking distance = total stopping distance.

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11
Q

What is the minimum speed hydroplaning can occur?

A

30Mph

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12
Q

How far should you be able to stop visually?

A

You should always be able to stop within the distance you can see ahead.

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13
Q

At night if you low beams what should you do?

A

Slow down

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14
Q

What is your most important objective when going down a downgrade?

A

To select and maintain a speed that is not too fast.

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15
Q

When is the braking effect of the engine most effective?

A

When it’s near the governed rpms and the transmission is in the lower gears.

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16
Q

How can you increase your chances of avoiding tailgate crashes?

A

Avoid quick changes, increase your following distance, and don’t speed up avoid tricks.

17
Q

Should you trust heights posted on bridges?

A

No don’t assume they are correct.

18
Q

What kind of drivers are hazards?

A

Ones with blocked vision and delivery trucks.

19
Q

Should you decrease your following distance if someone is following you too close?

A

No

20
Q

If you swing wide to the left before turning right another may try to pass you on the right?

A

Yes

21
Q

What is aggressive driving?

A

aggressive driving is the act of operating a motor vehicle in a selfish bold or pushy manner without regards for the rights or safety of others.

22
Q

What should you do if you notice signs of fatigue?

A

Stop driving go to sleep for a night or take a 15 to 20-minute nap.

23
Q

How long does it take a typical tractor trailer unit to clear a track?

A

14 for a single track and 15 for a double track.

24
Q

When does the ABS system activate?

A

When your wheels are about to lock up.

25
Q

What is the value specified by the manufacturer as the loaded weight of a single-vehicle?

A

Gross vehicle weight rating.

26
Q

What are the two basic reasons for covering cargo?

A

To protect people from spilled cargo and to protect a cargo from weather.

27
Q

What three different braking systems make up air brakes?

A

Service brake parking brake and emergency brake.

28
Q

What does the service brake do?

A

The service brake system applies and releases the brakes when you use the brake pedal during normal driving.

29
Q

What does the parking brake system do?

A

The parking brake system applies and releases the parking brakes when you use the parking brake.

30
Q

What does the emergency brake system?

A

The emergency brake system uses parts of the service and parking brake systems to stop the vehicle and brake system failure.

31
Q

What does the air compressor do?

A

Air compressor pumps air into the air storage tanks the air compressor is connected to the engine through the gears or a v belt.

32
Q

What does the air compressor governor do?

A

The air compressor governor controls when the air compressor will pump air into the air storage tanks.

33
Q

What is the cut out level for the air compressor governor?

A

The cut out level is around 125 psi.

34
Q

When is the air compressor Governor cut in pressure to start filling it up again.

A

Around a hundred PSI.

35
Q

Can the air tanks supply enough air to the brakes to be used several times even if the air compressor stops working?

A

Yes

36
Q

Why do we drain air tanks?

A

To prevent water from freezing in air tanks.

37
Q

When does the spring break activate?

A

20-45psi

38
Q

How does a dual brakes work on heavy duty vehicles?

A

Each system has its own air tank hoses lines etc one system typically operates the regular brakes on the rear axle or axles the other system operates the regular brakes on the front axle.

39
Q

True or false combination vehicles are usually heavier longer and require more driving skill than single commercial vehicles

A

True

40 Ft Questions (1 decks)

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