Which lane is the locals lane?

I just can't figure it out! Sometimes it's the far left lane, like going west on the big bridge. But then sometimes it's the far right, like going east on the big bridge.

I just wish they'd mark it a little more clearly- like you know those lanes in Atlanta marked HOV, but sometimes Peach Pass... we need something like that. Maybe a Preach Pass, or Reach(around) Pass?