Drivers, do not honk your horn at a person riding a bicycle, ever. *reasons to use your horn: imminent danger of a collision with another motorised vehicle : see HC *reasons not: at cyclists at pedestrians outside a house because you can't be arsed to walk to the door

@BobFromAccounts I seldom use my horn at all. The only time I used it against cyclists was a quick “Bip” to alert a group that I was there. The rear rider was bobbing and weaving all over the road and it was clear that the whole group was oblivious to any danger. We exchanged friendly….

@BobFromAccounts …waves as I passed. Fully agree - agressive use of the horn is provocative and can cause a nervous cyclist - or other road user - to have an accident as a result!