Ontario G1 Knowledge Test — G1 Practice Question
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Road Signs
A lane marked with a white diamond on the pavement and a sign with a diamond symbol means:
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Correct Answer: B. Reserved lane for buses, taxis, or high-occupancy vehicles
Diamond lanes are reserved for a specific authorised class of vehicle during posted hours — most often buses, taxis, and carpool/HOV vehicles meeting the minimum occupancy. Ordinary single-occupant vehicles using the lane are fined.