LGV Test - 8

LGV Test - 8
You need 17 out of 20 to pass this test
Start test

LGV Test - 8

Question 1 of 20

Your tractor unit has three air lines. You're connecting to a trailer that has two air-line couplings. What colour is the line you shouldn't connect to the trailer?

Red

Yellow

Black

Blue

LGV Test - 8

Question 2 of 20

When can an endurance brake (retarder) be especially useful?

when driving down long hills

when driving on steep cambers

As a way to reduce gear changes

to improve fuel consumption

LGV Test - 8

Question 3 of 20

How can you help to prevent ‘brake fade’?

use the endurance brake (retarder)

apply the parking brake

Select neutral for a short distance

Repeatedly pump the brake pedal

LGV Test - 8

Question 4 of 20

You're driving an articulated lorry. What could happen if you change to a lower gear while you're going too fast?

The vehicle could jack-knife

The engine could stall

The brakes could fail

The trailer could uncouple

LGV Test - 8

Question 5 of 20

When would you use an escape lane?

When motorways merge

When carrying a dangerous cargo

When your brakes have failed

When emergency repairs are needed

LGV Test - 8

Question 6 of 20

When should an endurance brake (retarder) be used?

on motorways only

when braking quickly

when you stop or park

on long downhill slopes

LGV Test - 8

Question 7 of 20

Your vehicle is fitted with air-assisted hydraulic brakes. What fault would you suspect if the brake pedal becomes hard to press?

The brake system has a loss of vacuum

The brake linings are worn

The brake linings need adjusting

The brake system requires more fluid

LGV Test - 8

Question 8 of 20

What does changing to a lower gear on a long downhill gradient help to avoid?

brake fade

clutch slip

excessive engine revs

tyre wear

LGV Test - 8

Question 9 of 20

What system is used to control a vehicle’s speed without using the footbrake?

a secondary brake

an endurance brake (retarder)

a differential lock

an emergency air system

LGV Test - 8

Question 10 of 20

You're driving down a snow-covered hill. Why should you take care when using an independent endurance brake (retarder)?

your brakes could overheat

your speed could increase

compressed air could escape

the drive-wheels could lock

LGV Test - 8

Question 11 of 20

Your lorry is stuck in snow. You use the diff-lock to move off. When should you switch the diff-lock off?

Only after selecting top gear

Once the engine has warmed up

As soon as the vehicle is moving

As soon as the snow has cleared

LGV Test - 8

Question 12 of 20

Your lorry is equipped with anti-lock brakes. What's the correct procedure for stopping in an emergency?

Apply the footbrake firmly in a pumping action until the vehicle has stopped

Apply the footbrake firmly and continuously until the vehicle has stopped

Apply the footbrake and handbrake until the vehicle has stopped

Apply the handbrake only

LGV Test - 8

Question 13 of 20

You're stationary. The brake air-pressure warning light comes on. Why should you keep the parking brake on?

Because the vehicle will suddenly roll backwards

Because it will cause the air pressure to rise

Because the service brake may not stop you

Because it will make the warning light go out

LGV Test - 8

Question 14 of 20

Your vehicle is fitted with an anti-lock braking system. When should you check that it's working properly?

Before each service

At the start of each working day

At the start of each working week

Before every journey

LGV Test - 8

Question 15 of 20

A lorry is overtaking you on a two-lane motorway. What should you do if it doesn't have the speed to get past?

Continue at the same speed

Be prepared to reduce your speed

Increase your speed and force the lorry to drop back

Brake hard to allow the other driver to cut in

LGV Test - 8

Question 16 of 20

You're driving a vehicle fitted with anti-lock brakes. What should you do when braking in an emergency?

‘Pump’ the brake pedal harshly

apply minimum force to the brake pedal

use the exhaust brake (retarder) then the footbrake

apply firm continuous pressure to the brake pedal

LGV Test - 8

Question 17 of 20

How will anti-lock brakes improve your vehicle's safety?

They allow you to follow other vehicles more closely

They help you keep steering control while braking heavily

They let you drive faster on wet roads

They enable you to brake later than normal

LGV Test - 8

Question 18 of 20

You're driving down a long hill. What should you use to prevent the brakes from overheating?

The anti-lock braking system

The footbrake

The secondary brake

The endurance brake (retarder)

LGV Test - 8

Question 19 of 20

What could prevent air pressure from building up in an air-brake system in frosty weather?

Moisture in the air may form bubbles in the brake fluid

The air will contract, reducing the pressure

The dampness may cause valves to rust

Moisture drawn in with the air may freeze and cause a blockage

LGV Test - 8

Question 20 of 20

'Brake fade’ is a loss of effectiveness of the brakes when they overheat. When would 'brake fade' be most likely to happen?

On a long journey

On a long downhill gradient

On the approach to hazards

On a long uphill gradient

50%

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