The other day, cycling home from work, a two-wheeler came up behind me on the left and honked several times. She then overtook me on the left and as she did, I felt compelled to ask why she had honked. (Since the traffic was heavy and it was not a wide road, we were all crawling along.) Her response was that she was warning me! Of what I still don’t know. At one level that response could be read as aggression - “I am warning you, get out of the way, or else…” or it could be meant to inform me that she exists. Either way there was no need to honk.