51. Where does a high-pressure fuel injector deliver fuel?

57. How frequently should the components of a fifth-wheel coupling be inspected?

14. What would be illegal?

20. What's it advisable to do when you replace a tubeless tyre?

47. Which tool is essential for fitting a road wheel?

6. Why should your engine oil be changed at the recommended intervals?

37. What would you secure with a dog clip?

41. What could happen if there isn't enough oil in your engine?

70. What does it mean if the ignition warning light comes on while you're driving?

34. What's most likely to cause a burst tyre?

44. How can you check the age of a tyre fitted to your vehicle?

43. When should you check the oil level in your engine?

54. What proportion of the width of a tyre must have at least the legal minimum depth of tread?

60. On motorways, you're usually driving at higher speeds for long distances. What effect can this have on your tyres?

19. A loud buzzer sounds in your vehicle. What's this most likely to indicate?

78. Bus and lorry tyres have codes on their side walls. What do these codes refer to?

1. Your vehicle has broken down at night on a two-way road. How should you try to leave the vehicle?

61. How can vehicle breakdowns be reduced?

29. What must vehicle operators provide for their drivers?

22. What could happen if you overfill your engine with oil?

18. Where should you park your vehicle before checking the engine oil level?

13. You're checking your vehicle's tyres before starting a long motorway journey. What check should be made on each tyre?

46. You're driving along a motorway. What should you do if the air-pressure warning device starts to operate?

67. What does this warning light on the instrument panel mean?

27. What's the main reason for cleaning your wheels and tyres when you leave a building site?

48. How often should the components of the fifth-wheel coupling be inspected?

64. You're uncoupling a trailer. What must you do before disconnecting any of the air lines?

3. What's the most likely cause if your steering starts to feel heavy?

39. You notice that one of your tyres has a bulge in the side wall. What will happen if you drive the vehicle?

9. When should anti-freeze be used in the cooling system?

77. What do heated fuel lines prevent?

38. Why should you use an approved coolant solution in your engine's cooling system?

81. Before starting a journey, you want to check your brake-system warning lights. What can you do when these aren't operated by the ignition switch?

5. What should you do if the brake pedal becomes hard to press?

33. What's the fifth-wheel coupling used for?

65. What do the codes shown on the side walls of bus and lorry tyres refer to?

79. What should you do if thick black smoke is coming from the exhaust of your vehicle?

56. The Driver and Vehicle Standards Agency (DVSA) and the police carry out spot checks for faulty vehicles. What will happen to the vehicle if serious defects are found?

25. You're driving a new articulated lorry that's fully laden. You notice that the steering feels heavy. What's the most likely reason?

32. A tyre has been replaced on your vehicle. What precautions should be taken when tightening the wheel nuts?

59. Why is it important to avoid overfilling the engine with oil?

21. Why are energy-saving tyres effective?

26. What can you add to diesel fuel to prevent it from becoming less effective at low temperatures?

72. What's the advantage of energy-saving tyres?

35. What will happen if you follow a regular vehicle maintenance schedule?

73. When can 'selective' or 'block' gear changing be used?

17. Your vehicle suffers a tyre blow-out. How could this create a hazard for other road users?