Ontario G Road Test Training · Question
What is the maximum speed limit on most Ontario expressways (400-series highways) unless otherwise posted?
The default maximum speed limit on Ontario 400-series highways and expressways is 100 km/h unless posted otherwise, according to the Ontario Highway Traffic Act
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Question: What is the maximum speed limit on most Ontario expressways (400-series highways) unless otherwise posted?
Answer options:
- 80 km/h
- 90 km/h ✅ 100 km/h
- 120 km/h
Correct answer: 100 km/h
Explanation: The default maximum speed limit on Ontario 400-series highways and expressways is 100 km/h unless posted otherwise, according to the Ontario Highway Traffic Act. The option of 80 km/h is incorrect because it is the default speed limit on open provincial highways outside cities and towns, while 120 km/h is illegal and exceeds Ontario's standard maximum limits. Motorists must know these statutory defaults, as the MTO frequently tests speed limits for different road classifications where no signs are present. Memorizing these distinct limits is essential for passing the rules-of-the-road section of the G1 exit exam.
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Question explanations
- What does an inverted (upside-down) red and white triangle mean?
- A yellow diamond-shaped sign is used to indicate what?
- 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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