Where is the PSA currently used?

The PSA is used in hundreds of localities around the country. The PSA is used statewide in Arizona, Kentucky, New Jersey, and Utah; and it is used in a number of major cities and surrounding areas including Allegheny County (Pittsburgh), Pennsylvania; Cook County (Chicago), Illinois; Harris County (Houston), Texas; Mecklenburg County (Charlotte), North Carolina; Milwaukee County, Wisconsin; and San Francisco County, California.