I found it works great for buses - when I was consciously doing it all the time earlier this year, never had to wait more than a few minutes for a bus with a seat - when I wasn't doing it, might have to wait ages and get a sardine can!
I've just started doing it again for the buses and blow me it works again! More than coincidence says it should, I'm sure.
I shall have to look up "segment intending" - never heard of it before!
@Arboreter - I love Cairenes, and I go on buses etc instead of taxis partly because noone rips me off on the bus ;D