They cancel with speed and the angle sensor. I believe that turns from a stop both the angle sensor and speed sensors come into play.
I have never had my turn signals cancel from making any turns. If I "tap" the turn signal button at a traffic stop and I make the turn it still flashes for the same distance as when I use them for passing. And I have scraped the pegs on many a left/right turn that would definitely activate any angle sensor IF that disabled them.
So when I tap them at a traffic stop - I manually cancel them after I make the turn (but if I forget - they cancel themselves in less than a quarter mile).
Proud Owner of IDMWT #102
2004 Black GL1800A Gold Wing
1997 Black/Silver Kawasaki Vulcan 750