Originally Posted by ttpete
It's there to facilitate making left turns without holding traffic up. The proper procedure is to signal, pull into the center lane, and wait until oncoming traffic clears, then complete the turn.
I've never seen anyone around here execute a U turn using the center lane.
Well, good for you man! It happens with regularity around here. However, in their defense; I have to say that Phx. drivers are (for the most part) real assholes.