Which way to the 6B?

Lori B and Andy are in. Van 2 (aka Balki) on our way to transition 6B.

So a few quick questions. What happens if our runner gets to the transition before we do? Or what happens if we get there before our runner? Or, heaven forbid, how do we know when to start if our runner is still at transition 6A?!!

Where are my sneakers? Someone help me!