DGT Practice Test 86
30 official-format questions from the Spanish DGT theory bank, in English. Read every question below - each links to its full answer and explanation. Start the test to answer against the clock.
Reviewed on 7 Oct 2026
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The 30 questions in this test
- 1. If a driver tests positive for alcohol or drugs, what happens to their vehicle?
- 2. What is one of the most effective measures against drowsiness while driving?
- 3. What does the S-348b road sign mean?
- 4. By how much must school transport vehicles reduce their speed on non-urban roads?
- 5. For legal purposes, people travelling in a wheelchair are considered:
- 6. When a vehicle that must use the hard shoulder (other than a bicycle) overtakes another, for how long at most may they travel side by side?
- 7. What does the R-509 road sign mean?
- 8. What does the R-308h road sign mean?
- 9. What does the R-116 road sign mean?
- 10. For which vehicles is an approved helmet mandatory for both driver and passenger?
- 11. What does the S-375 road sign mean?
- 12. At an unsigned road narrowing, which vehicle has priority?
- 13. What does the R-310 road sign mean?
- 14. What are the main obligations of a vehicle owner?
- 15. How should the head restraint be adjusted to protect the neck in an impact?
- 16. A road assistance vehicle (tow truck): what may it do to assist a broken-down vehicle on an urban road?
- 17. Why do vehicle combinations require additional driving skill?
- 18. What does the R-104 road sign mean?
- 19. When turning left, what must the driver do regarding oncoming traffic?
- 20. What does the S-129 road sign mean?
- 21. What does the R-112 road sign mean?
- 22. Where must pedestrians walk if there is no sidewalk in an interurban area?
- 23. In which of these cases is a driver exempt from the duty to assist victims?
- 24. If a vehicle travelling ahead of you in the same direction is close, may you use the main beam?
- 25. What does the S-270 road sign mean?
- 26. What technology does Night Vision Assist use to detect pedestrians or animals beyond the reach of the headlights?
- 27. Even with correctly adjusted mirrors, to make sure no vehicle is in the blind spot before changing lanes you must:
- 28. Which of the following is a self-propelled service machine?
- 29. At a signed livestock trail or crossing, what must the driver do?
- 30. How is aquaplaning prevented?