A long vehicle ahead signals left, yet moves out to the right before it turns. Why?

Answer and explanation

Correct answer: A. It needs extra room to clear the kerb during the turn

  1. Step 1: Articulated lorries and long buses track inside their own path on a turn. Step 2. The driver swings out to stop the rear wheels cutting the corner, so you should not pass on the left. Answer: It needs extra room to clear the kerb during the turn. Why not the others: A wrong signal, an overtake and a fault are all less likely than the normal swing-out of a long vehicle.

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