are air horns legal in victoria

Short answer: yes, air horns can be legal in Victoria, provided they comply with the Australian Design Rules and VicRoads vehicle standards.

They must be a proper audible warning device—no sirens, bells, whistles, multi-tone novelty tunes, or anything that impersonates emergency services.

Loud is fine; unreasonably loud isn’t—if it startles half of Geelong, expect a yellow sticker and an awkward chat.

Install it securely, keep it roadworthy, and only use it to warn about danger, not to announce your arrival at the servo.

If your air horn meets the standards, you’re sweet; if not, it’s defect territory.