It's funny you should mention a flag. Today, driving the car on the singletrack roads here, which are quite up and down, as i came to the crest of a small hill, what do I see but an orange thing waving about. Odd, I thought and braked and as I came over the crest, there was a recumbent handtrike coming up the other side. Now I would've stopped anyway but normally you can see the top of a car at the point I was when I saw the flag but the trike was not visible at all, so in this case it certainly helped her be seen.
Brave woman, using a handtrike around here. Her husband was behind her towing a trailer with stuff, including wheelchair: Quite humbling.
I also saw another two trikes today as well at the village shop, the twin rear wheel variety. Maybe there's a convention
