Manitoba Class 5 Learner Knowledge Test · Question
During heavy rain, after how much standing water depth can hydroplaning become a significant risk?
Hydroplaning can occur in as little as 1/16th of an inch of water at speeds as low as 50 km/h, as tires lose contact with the road surface.
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Question: During heavy rain, after how much standing water depth can hydroplaning become a significant risk?
Answer options: ✅ As little as 1/16th of an inch.
- Approximately 1 inch of water.
- Only when water completely submerges the tires.
- Hydroplaning is only a risk on icy roads.
Correct answer: As little as 1/16th of an inch.
Explanation: Hydroplaning can occur in as little as 1/16th of an inch of water at speeds as low as 50 km/h, as tires lose contact with the road surface.
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Question explanations
- What does a circular sign with a red border and diagonal line through a black 'P' indicate?
- You are driving in Edmonton and see a flashing amber light on a school bus. What action must you take?
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