Nunavut Class 7 Knowledge Test · Question
A yellow diamond construction sign with a black 'blasting' symbol and 'TURN OFF RADIO' implies:
This critical warning sign means that blasting operations are in progress, and electronic devices that could prematurely detonate explosives must be turned off.
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Question: A yellow diamond construction sign with a black 'blasting' symbol and 'TURN OFF RADIO' implies:
Answer options:
- Poor radio reception in the area
- Radio signals interfere with construction equipment ✅ Blasting is underway; turn off two-way radios and cellular devices
- Music is prohibited in the construction zone
Correct answer: Blasting is underway; turn off two-way radios and cellular devices
Explanation: This critical warning sign means that blasting operations are in progress, and electronic devices that could prematurely detonate explosives must be turned off.
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