Is it unreasonable to beep your horn at elderly drivers? I over heard a conversation in the shop where an old man pulled out on a mini round about, the driver beeped but the old man pulled over as it scared the shit out of him being beeped at. Frightened of the driver by the sounds of it.
What else are you actually supposed to do? I beep at anyone if they don't see me but never thought about how old people might think and what it could do to them.