car horn laws australia

In Australia, your car horn isn’t a mood ring—it’s a warning device. You’re allowed to use it only to warn other road users or animals of your presence, or as part of an alarm; leaning on it because someone dawdled at a green light is not allowed. Unnecessary honking can earn fines, and it won’t make traffic move any faster anyway. Aftermarket sirens or multi‑tone “train horns” that mimic emergency vehicles are off-limits. Your horn must be fitted and working for roadworthiness, but keep the noise reasonable and brief. When in doubt, leave the concerto for the driveway.