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Ontario G1 Practice Test
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Passing target: 16 correct signs and 16 correct rules (TLA practice targets)
Night, weather, skids, vehicle failures and collisionsStandalone practice
When approaching an oncoming vehicle at night, when must you switch your headlights from high beams to low beams?
A night road has blue A approaching silver B in the opposite lane. The upper panel is a scaled ground overview. The lower panel enlarges the same vehicles, with spacing explicitly not to scale. The distance threshold is not shown before answering.
Correct answer: Within 150 metres
Why
You must switch your high beams to low beams when an oncoming vehicle is within 150 metres to avoid blinding the other driver.
Verified against The Official Ministry of Transportation (MTO) Driver’s Handbook · Night, weather, skids, vehicle failures and collisions · p. 93, 103
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