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Category D1 questions

Every official question that can appear on the category D1 theory test, with correct answers and explanations. Search a topic or browse the list.

1 471 questions

  1. 6921 What necessary activities should be performed by a bus driver while replacing a wheel on the road? 1 pts D D1
  2. 6922 What necessary activities should be performed by a bus driver while replacing a wheel? 1 pts D D1
  3. 6923 What fuel should be used in diesel engines commonly found in buses? 1 pts D D1
  4. 6924 Can you add water to the cooling system of a bus engine? 1 pts D D1
  5. 6925 What will you use to dilute the concentrate, which is the main component of the cooling liquid? 1 pts D D1
  6. 6926 Which sub-assemblies of the bus are lubricated with gear oil? 1 pts D D1
  7. 6928 What causes ignition in a diesel oil? 1 pts D D1
  8. 6929 When you drive a bus, how can you identify excessive clearance of the steering mechanism? 1 pts D D1
  9. 6930 What symptom indicates a malfunction of the power steering system in a bus? 1 pts D D1
  10. 6931 What symptoms observed while driving a bus indicates that there is excessive clearance in the universal joints of the steering system? 1 pts D D1
  11. 6932 What may be the cause of lack of tightness in the pneumatic braking system applied in buses? 1 pts D D1
  12. 6933 Which of the following symptoms may indicate a malfunction of the air compressor of the brake system in the bus? 1 pts D D1
  13. 6934 What should you do in the event of an aggressive behaviour of a passenger towards you or other passengers, making it difficult for you to drive? 3 pts D D1
  14. 6935 At what distance behind the vehicle should you place a warning triangle in order to secure an accident scene on an express road? 3 pts D D1
  15. 6936 What should you primarily take care of in the event of a fire in the bus you are driving? 3 pts D D1
  16. 6938 How should you behave in case of a fire inside a bus during the journey? 3 pts D D1
  17. 7124 In this situation, can you make a U-turn at the intersection? 3 pts B A A1 A2 +
  18. 7127 Can you use the horn in this situation to warn the pedestrian of danger? 1 pts B A A1 A2 +
  19. 7128 Should you change to the middle lane in this situation when you intend to go straight on? 2 pts B A A1 A2 +
  20. 7129 Can you use the horn in this situation to warn the pedestrian of danger? 1 pts B A A1 A2 +