Just today, some senior citizens were walking on my bike route. The path there is very narrow and there is sand on both sides. They were walking on the right and in the middle. I was going about 10mph here since its so narrow and you can't really go that fast there. As I approached I said "on your left" and this old guy who looked like santa moved to the right, and as I passed he said thank you. I assume for telling him that I was approaching.