Originally Posted by
Monster Pete
Correct use of the horn (at least over here anyway) is defined as 'to warn other road users of your presence.' So technically, you should briefly honk the horn whenever you pass someone who may not know you're there, such as a cyclist without rear-view mirrors. In some cities it does seem as if all the cars have the horn wired to both the gas and brake pedals though.
Yep, I've had a few cars give a quick beep as they approached, which I usually take to show they just want me to know they are approaching from behind. I've had the odd guy give a long blast from some distance back before passing too close and too fast - people like that tend to get a wave. Sometimes I use all my fingers to wave.
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