New Brunswick Knowledge Test Coach
Safe drivingQuestion 239 of 309

Which vehicles may use a siren on the highway?

  1. Any vehicle with a loud horn
  2. Any vehicle that tows a trailer
  3. Authorized emergency vehicles only
  4. Taxis in an urgent trip
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Correct answer: Authorized emergency vehicles only

Only authorized emergency vehicles may use a siren, whistle or bell.

Source: New Brunswick Driver's Handbook (Government of New Brunswick, 2022), 3.3 Horn, page 30

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Questions last reviewed: 18 October 2026