Here, take a gander at THIS:
The Pennsylvania Turnpike has ascended to the top among longer toll roads largely because of a 2007 state law requiring it to help fund non-turnpike transportation programs
IOW, the Turnpike Commission now has to pay money to help support PennDOT in addition to turnpike operations.
So? It just shows how corrupt the entire political system is in PA, that under Fast Eddie Rendell they have to rip off drivers on the Turnpike to pay for mass transit in Philly and Pittsburgh - you know, systems pimped by liberal big-government idiots like Rendell - and you.