Breaking System Flashcards by Jay Collins

Youre Driving a vehicle fitted with anti-lock brakes. What should you do when braking in an emergency

Apply firm, continuous pressure to the brake pedal

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Your vehicle has anti-lock brakes. How does this affect you when youre braking normally

Theres no need to alter the way you brake

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The emergency line is common to both two line and three line brake systems. what colour is it

Red

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What causes Brake fade

continuous use of the brakes

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Which component will last longer when you use a retarder

The brake lining

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When are exhaust brakes most efficient

At high engine speed while in low gears

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You have to drive onto a muddy building site. Why should you switch off your driff-lock

To make the wheels less likely to spin

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What should you do if the brake air- pressure warning light comes on while youre driving

stop and get help without delay

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Your vehicle is fitted with hydraulic brake . Why might the brake pedal go down too far when its pressed.

There isnt enough fluid in the braking system

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Whats brake fade?

Reduction of braking effectiveness

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Whats the principal braking system on a lorry called

The service brake

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what should you do when driving a large vehicle down a steep hill

use the endurance brake

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What can coasting downhill seriously affect

The air brakes

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Your vehicle if fully loaded where should you be braking when dealing with bends

When driving in a straight line

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Your lorry is equipped with anti-lock brake. Whats the correct procedure for stopping in an emergecny

Apply the footbrake firmly and continuously until the vehicle has stopped

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Where would you see a escape lane

down a steep hill

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Youre about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir

Find out whether you need to drain the system manually

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When would you use an escape lane

when the brakes have failed

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Youve just started the engine. What must you do if the brake air pressure warning light is showing

Keep the parking brake on

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Youre driving down a long hill what should you use to prevent the brakes from overheating

The endurance brake (Retarder)

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When is trailer swing most likely to occur on a lorry and drawbar combination

While youre braking on a bend

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Your vehicle is fitted with an antilock braking system. When should you check that its working properly

Before every journey

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Your vehicle is fitted with an anti lock braking system. Whats it designed to allow you to do

Stop safely in an emergency

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A Lorry is overtaking you on a two lane motorway. what should you do if it doesnt have the speed to get past

Be prepared to reduce your speed

your vehicle is fitted with an air assisted hydraulic braking system. What would warn you that the vacuum pump isnt working

The brake pedal feels hard when pressed

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

An endurance brake (retarder)

How will antilock brakes improve your vehicles safety

They help you keep steering control while braking heavily

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

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

In frosty weather what. precaution could a lorry driver take to prevent moisture from freezing in the air brake system

Drain the air tanks daily

Youre stationary the brake air pressure warning light comes on. Why should you keep the parking brake on

Because the service brake may not stop you

What colour is the auxiliary line on a three line braking system

blue

What should anti lock brakes let you do when you have to stop an emergency

Maintain steering control

How can you help to prevent brake fade

use the endurance brake

when should an endurance brake (retarder) be used

On a long downhill slopes

What should you avoid when using an independent endurance brake (retarder) on slippery roads

The drive wheels locking

your vehicle is fitted with air-assisted hydraulic brakes. What would warn you that there isnt enough air in the system

A buzzer or light

Where must extra care be taken when using an endurance brake (retarder)

On slippery roads

How can a lorry driver avoid a break fade

select an appropriate gear before going downhill gradients

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

Brake fade

Your vehicle is fitted with air brake . What does it mean if a break warning light shows when youve just started the engine

Low air pressure

Youre driving an articulated lorry that has three air lines connected to the trailer. Whats the purpose of the red line

Its the emergency line

Youre driving an articulated lorry. What could happen if you change to a lower gear while youre going too fast

The vehicle could jack-knife

When can an endurance brake (retarder) be especially useful

While driving down long hills

When is an articulated vehicle most at risk of jack-knifing

While its under heavy braking

What should you do when an air-pressure warning device activates

Stop and have the fault put right

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

As soon as the vehicle is moving

Youre about to drive a vehicle fitted with air-assisted hydraulic brakes. Why might the brake pedal feel hard when you press it

The vacuum pump isnt working

your vehicle is fitted with a diff-lcok. When would you normally use it

while driving on a muddy construction sites

Your tractor unit has three air lines youre connecting to a trailer that has two air-line couplings. What colour is the line you shouldnt connect to the trailer

BLUE

Your vehicle is fitted with air assisted hydraulic brakes. What would you suspect if the brake pedal become shard to press

The brake system has a loss of vacuum

Youre about to drive a vehicle fitted with hydraulic brakes . What should you check before driving the vehicle

The hydraulic-brake fluid level

What will 'pumping' the brake pedal in a vehicle fitted with anti-lock brakes cause

reduced effectiveness

Air-brake systems usually have two lines. Which additional line is fitted on a three-line system

Auxiliary

Youre driving a tractor unit fitted with two airlines. you want to couple to a trailer that has three air-line couplings. How should the air lines be connected

The trailer auxiliary line should be left unconnected

What should you do after driving through a flood.

Drive in a low gear with the footbrake lightly applied

Which coloured band on the rev counter makes the best use of engine braking

Blue

Youre driving down a snow covered hill. Why should you take care when using an independent endurance brake (retarder)

The drive wheels could lock

When does 'Brake Fade' occur

When the brakes get too hot

'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 downhill gradient