Read the linked article, people.
This situation got me thinking...we don't have that kind of problem here in Philadelphia, but we do have a strong case of street-numbering retardation.
Market St. is our N-S divider, while Front St. is our E-W divider. There is also Germantown Ave., which essentially runs E-W, but is a N-S street, and serves as another E-W divider.
As you travel through the East Mount Airy and Germantown areas into West Oak Lane, things start getting interesting. The E-W streets that fed off Germantown Ave. start meeting the E-W streets that fed off Front St. Chelten Ave., which was an E-W street off Germantown, becomes an E-W street off Front...the street number changes from 2100 E to 2000 W. If you have a friend that lives in the 200 block of W. Chelten Ave., check your directions (as there are 2 separate 200 blocks of W. Chelten).
Then there are the shared street names, but that's another story...