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PRINTABLE TEST (answers on the bottom of the page)
Test Type: Large Vehicle - Braking systems
Number of Questions: 10
Pass Mark: 10

1) What could prevent air pressure building up in an air brake system
in cold frosty weather?
A - Moisture in the air may form bubbles in the brake fluid
B - The air will contract, reducing the pressure
C - The dampness may cause valves to rust
D - Moisture drawn in with the air may freeze and cause a blockage

2) A system for controlling the vehicle's speed without using the footbrake is
A - a secondary brake
B - an endurance brake (retarder)
C - a differential lock
D - an emergency air system

3) The brake air pressure warning light comes on whilst driving.
You should
A - stop and seek help without delay
B - report the fault on return to your depot
C - boost the pressure through added acceleration
D - drain air tanks and continue normally

4) Coasting downhill could seriously affect the correct working of the
A - air brakes
B - cooling system
C - tachograph
D - electrical systems

5) To prevent 'brake fade' you should
2 answers required
A - use the endurance brake (retarder)
B - apply the parking brake
C - select a lower gear
D - repeatedly pump the brake pedal
E - select neutral for a short distance

6) You are driving a vehicle not fitted with antilock brakes.
How can 'wheel lock' be controlled during heavy braking?
A - By using engine braking
B - By cadence braking
C - By braking suddenly
D - By using clutch and brake together

7) You are stationary. The air brake pressure warning light comes on.
Why should you NOT release the parking brake?
A - Because the vehicle will suddenly roll backwards
B - Because it will cause the air pressure to rise
C - Because the service brake may not stop you
D - Because the warning light will go out

8) When using an independent endurance brake (retarder) on slippery roads,
you should take care to avoid
A - the front wheels spinning
B - the drive-wheels locking
C - brake pad wear
D - anti-skid road surfaces

9) 'Brake fade' is a loss of effectiveness of the brakes, caused by their continuous use.
When would this be most likely to happen?
A - On a long journey
B - On a long downhill gradient
C - On the approach to hazards
D - On a long uphill gradient

10) A lorry is overtaking you on a two-lane motorway.
It does not have the speed to get past. What should you do?
A - Continue at the same speed
B - Be prepared to reduce your speed
C - Increase your speed and force the lorry to drop back
D - Brake hard to allow the other driver to cut in

Answers

1. d

2. b

3. a

4. a

5. a,c

6. b

7. c

8. b

9. b

10. b

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