Braking systems
In frosty weather, what precaution could a lorry driver take to prevent moisture from freezing in the air-brake system?
Your vehicle is fully loaded. Where should you be braking when dealing with bends?
You're driving down a long hill. What should you use to prevent the brakes from overheating?
When is trailer swing most likely to occur on a lorry and drawbar combination?
'Brake fade' is a loss of effectiveness of the brakes when they overheat. When would 'brake fade' be most likely to happen?
Air-brake systems usually have two lines. Which additional line is fitted on a three-line system?
You're about to drive a vehicle fitted with hydraulic brakes. What should you check before driving the vehicle?
You're driving an articulated lorry. What could happen if you change to a lower gear while you're going too fast?
You have to drive onto a muddy building site. Why should you switch on your diff-lock?
When is an articulated vehicle most at risk of jack-knifing?
Your vehicle is fitted with an air-assisted hydraulic braking system. What would warn you that the vacuum pump isn't working?
What's 'brake fade'?
The emergency line is common to both two-line and three-line brake systems. What colour is it?
What could prevent air pressure from building up in an air-brake system in frosty weather?
Your vehicle is fitted with an anti-lock braking system. What's it designed to allow you to do?
Your lorry is stuck in snow. You use the diff-lock to move off. When should you switch the diff-lock off?
What should you do if the brake air-pressure warning light comes on while you're driving?
You're driving an articulated lorry that has three air lines connected to the trailer. What's the purpose of the red line?
Your vehicle is fitted with an anti-lock braking system. When should you check that it's working properly?
What should you avoid when using an independent endurance brake (retarder) on slippery roads?
A lorry is overtaking you on a two-lane motorway. What should you do if it doesn't have the speed to get past?
Your vehicle is fitted with a 'diff-lock'. When would you normally use it?
When can an endurance brake (retarder) be especially useful?
Your vehicle is fitted with air brakes. What does it mean if a brake warning light shows when you've just started the engine?
What's the principal braking system on a lorry called?
What does changing to a lower gear on a long downhill gradient help to avoid?
What should anti-lock brakes let you do when you have to stop in an emergency?
You're about to drive a vehicle fitted with air-assisted hydraulic brakes. Why might the brake pedal feel hard when you press it?
When should an endurance brake (retarder) be used?
You're about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir?
You've just started the engine. What must you do if the brake air-pressure warning light is showing?
You're driving down a snow-covered hill. Why should you take care when using an independent endurance brake (retarder)?
When does 'brake fade' occur?
Where must extra care be taken when using an endurance brake (retarder)?
Where would you see an escape lane?
Which component will last longer when you use a retarder?
When would you use an escape lane?
How can you help to prevent 'brake fade'?
What will 'pumping' the brake pedal in a vehicle fitted with anti-lock brakes cause?
When are exhaust brakes most efficient?
How can a lorry driver avoid brake fade?
What causes 'brake fade'?
Which coloured band on the rev counter makes the best use of engine braking?
What should you do after driving through a flood?
Your vehicle is fitted with air-assisted hydraulic brakes. What fault would you suspect if the brake pedal becomes hard to press?
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?
What can coasting downhill seriously affect?
Your vehicle is fitted with air-assisted hydraulic brakes. What would warn you that there isn't enough air in the system?
Your vehicle has anti-lock brakes. How does this affect you when you're braking normally?
Your lorry is equipped with anti-lock brakes. What's the correct procedure for stopping in an emergency?
You're driving a vehicle fitted with anti-lock brakes. What should you do when braking in an emergency?
What colour is the auxiliary line on a three-line braking system?
Your vehicle is fitted with hydraulic brakes. Why might the brake pedal go down too far when it's pressed?
You're stationary. The brake air-pressure warning light comes on. Why should you keep the parking brake on?
How will anti-lock brakes improve your vehicle's safety?
What should you do when an air-pressure warning device activates?
You're driving a tractor unit fitted with two air lines. You want to couple to a trailer that has three air-line couplings. How should the air lines be connected?
What system is used to control a vehicle's speed without using the footbrake?
What should you do when driving a large vehicle down a steep hill?
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