Règles de la route

You should NOT use high beams:

Panneau routier de Ontario — When following another vehicle closely, approaching oncoming traffic within 150 m, or in fog/heavy rain/snow
Afficher la réponse et l'explication
Bonne réponse : B. When following another vehicle closely, approaching oncoming traffic within 150 m, or in fog/heavy rain/snow

High beams reflect off fog droplets, rain, and snow, reducing visibility. They also blind drivers in front (via rear-view mirror) and oncoming (direct). The 150-metre rule prevents the latter.