Ontario Class A Practice Test · Question
Upon seeing a yellow diamond-shaped sign with a black truck symbol exceeding a certain height (e.g., '3.8 m'), what immediate action should a Class 1 driver take?
A yellow diamond-shaped sign with a height indicated signifies a low clearance ahead. Commercial drivers must know their vehicle's height and ensure it is below
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Question: Upon seeing a yellow diamond-shaped sign with a black truck symbol exceeding a certain height (e.g., '3.8 m'), what immediate action should a Class 1 driver take?
Answer options:
- Proceed with caution, as it indicates a suggested clearance. ✅ Ensure their vehicle height is below the specified limit before proceeding.
- Increase speed to clear the obstacle quickly.
- Call ahead to the destination for alternative routing.
Correct answer: Ensure their vehicle height is below the specified limit before proceeding.
Explanation: A yellow diamond-shaped sign with a height indicated signifies a low clearance ahead. Commercial drivers must know their vehicle's height and ensure it is below the posted limit to avoid striking overhead structures.
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