Prince Edward Island Knowledge Test Coach
Safe drivingQuestion 38 of 312

What must a farm tractor or other slow machine show at its rear on a highway?

  1. A red lantern in daytime
  2. A green flashing light
  3. A sign with a number plate only
  4. A slow-moving vehicle sign
Show answer

Correct answer: A slow-moving vehicle sign

Machines made for speeds under 40 km/h must show the sign on the rear.

Source: Highway Traffic Act (PEI, consolidated to May 29, 2026), s. 177(4) Slow driving: slow moving vehicle sign, page 95

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Questions last reviewed: 18 October 2026