Panneaux routiers

A yellow diamond reading 'BRIDGE MAY BE ICY' or showing a snowflake over a bridge means:

Panneau routier de Île-du-Prince-Édouard — Bridge decks freeze before road surfaces — expect reduced traction especially in winter
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Bonne réponse : A. Bridge decks freeze before road surfaces — expect reduced traction especially in winter

Winter bridge-deck ice causes sudden loss of traction mid-span where there is no escape route; advance warning enables pre-bridge braking.