Well, my Apple Watch may not have shipped yet, but that doesn’t mean I can’t spend every last second poring over the user manual for useful nuggets of information, like this:
A steady series of 12 taps means turn right at the intersection you’re approaching; three pairs of two taps means turn left.
I’m guessing they chose these two patterns because they’re so distinct as not to be confused with one another. But that is a lot of wrist tapping. (Thanks to Twitter user tcbritt for pointing this out.)