PGH
Things observed while over the state line:
1. Traffic laws are different. For instance, in PA, one must turn on one's headlights while driving through a construction zone. In Ohio, not the case. Also, trucks do not have to drive 55 while everyone else goes 65. In Ohio, trucks have to go 55. A law of which I am a huge fan. I despise trucks, particularly those which speed past me going 75 when I am going 70. They should be going slower so everyone can get around them. But that's just me.

2. Everyone who lives in Pittsburgh, while writing their address, abbreviates Pittsburgh as "PGH". Just strikes me as odd.