Ontario G Road Test Training · Question
A yellow diamond with the silhouette of a truck angling downward means:
A yellow diamond-shaped sign with a truck angled downward is an official Ontario warning sign indicating a steep downgrade ahead. This cautions all drivers, esp
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Question: A yellow diamond with the silhouette of a truck angling downward means:
Answer options:
- Truck route ✅ Steep downgrade ahead
- Truck stop
- Trucks prohibited
Correct answer: Steep downgrade ahead
Explanation: A yellow diamond-shaped sign with a truck angled downward is an official Ontario warning sign indicating a steep downgrade ahead. This cautions all drivers, especially those in heavy vehicles, to prepare to control their speed or shift to a lower gear. The incorrect options are wrong because regulatory instructions like truck routes or truck prohibitions use white, black, or red circles, while informational services like truck stops use blue signs. Under the Ontario Highway Traffic Act, yellow diamond signs are strictly reserved for physical road hazards. Recognizing warning sign colors and symbols is highly relevant for the G1 exam, as identifying road signs is a major portion of the test.
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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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