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Air horns are legal in Queensland as long as they only play one note (musical air horns are illegal). The ADR rules state that they can't be on a fixed cycle, ie, you press your horn button and the horn makes continuous sound for a set time and then turns itself off. It must start with the press of the horn button and must stop when the horn button is released. Also your horn must play one single continuous note with the horn button depressed. Your horn can be powered by any means including air.

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11y ago

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