The other night I was riding back through Dagenham, filtering on and off, nice a slow past a queue of traffic crawling along. Was near a row of shops, with a couple side roads, a pelican crossing and quite narrow in places. I was doing about 5-10mph, nice and steady as tonnes of hazards etc. But, I past two cars 30 secs apart, flashing hazards briefly, just before I was about to filter by them - and no, someone hadn’t just let them merge in etc. At the time, a couple of cars oncoming also flashed hazards too, one seemingly in response to the first car on my side, the second not.
At first I got all paranoid I had my hazards on unnecessarily or such like, but no. Any ideas what this was all about? Some kind of unofficial notice to other drivers? A secret hand shake? Just seemed a bit weird. 4 cars in space of 30m and 1 minute, all flashing hazards for a moment… Dunno, probably reading into it too much… (he says beginning to wrap his helmet in tin foil)