Ontario G1 Knowledge Test — G1 Practice Question
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Accuracy —
Rules of the Road
When approaching an oncoming vehicle at night, you must switch from high beams to low beams at a distance of at least:
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Correct Answer: C. 150 metres
High beams blind oncoming drivers and cause temporary vision loss that can last several seconds. The 150-metre switch distance allows time for the oncoming driver to still see the road ahead. Similar rules apply at 60 metres when following another vehicle.