Pgh Left!

A funny quirk about the city I learnt from the locals - Pgh Left. What this means is this: In most cities in the US, when you're standing at a traffic light waiting to turn left, you normally yield to oncoming traffic in the opposite direction. Once the oncoming traffic has eased, you make a left. But in old-style Pittsburgh tradition, when you're trying to take a left and the signal turns green, more often than not, the driver of the car on the opposite side will wave for you to take the left turn first before he starts going straight. In fact this tradition is so common that people take it for granted that you'll let them take a left and just rush in when the signal turns green. The first couple of days I was here, I was pissed that the guy taking a left didn't yield to me, and I had honked my horn in disgust. But now I do understand it :)

Here is a Wiki Entry for this phenomenon: PGH Left.