Panneaux routiers

A yellow diamond combining a curve symbol with a posted speed (e.g., '50 km/h') is:

Panneau routier de Colombie-Britannique — An advisory safe speed for the curve in good conditions
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Bonne réponse : B. An advisory safe speed for the curve in good conditions

Advisory speeds are engineering recommendations for safe cornering. The posted legal limit still applies on the approach.