This article in the P-G detailing the Turnpike's plans to go to an all-electronic toll collection system and eliminate toll booth collectors to save money doesn't make sense. The PA Turnpike wants to spend $320 million dollars to set up the system, which would cost $83 million dollars a year to operate. This would eliminate the need to spend $65 million dollars for the salaries of toll collectors.
According to my calculator, that means the automated system costs $18 million dollars more per year to operate, along with the $320 million dollar startup costs. How does that save money? I suspect the real reason isn't to save money, but to eliminate more union jobs.