While it lacks proper hand signage for NOPA (what is this "Western Addition" of which you speak?), Presidio Terrace, SOMISSPO, or the LoRi (Lower Outer Rincon Hill is hardcore, yo), it's still something you will want to learn, live. Print it out and tape it to your cubicle wall. You are, after all, bad ass.
Aside: We haven't a clue who dreamed up the cart. For credit's sake, if you or your BFF created it, do let us know. Thanks!
Update: Chart by Generic.