Ontario Class B Practice Test · Question
A yellow diamond sign with a truck symbol on a slope means:
Yellow diamond warning signs alert drivers of steep grades where heavy vehicles should downshift.
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Question: A yellow diamond sign with a truck symbol on a slope means:
Answer options:
- No trucks allowed
- Truck entrance ahead ✅ Steep hill — trucks use lower gear
- Weigh station
Correct answer: Steep hill — trucks use lower gear
Explanation: Yellow diamond warning signs alert drivers of steep grades where heavy vehicles should downshift.
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