Règles de la route

How much in advance of a turn or lane change should you signal?

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Bonne réponse : B. Well before the turn or lane change, so others know your intent

Early signalling gives following drivers, cyclists, and pedestrians time to predict your action. Late signalling is a surprise and a top cause of sideswipes and rear-end collisions. Ontario recommends 30 metres advance in city driving, more on highways.