I came across this interesting podcast called “The High Cost of Free Parking” by City Journal contributing editor Aaron Renn and UCLA "parking guru" Professor Donald Shoup. They discuss creating “Goldilocks” pricing for parking to “optimize occupancy”. In some cases this may mean an overall decrease in the cost of parking for citizens. The premise here is that free or cheap parking leads to little parking availability. They also discuss the impact of Text2ParkMe type programs and how they benefit.
Check it out: http://www.city-journal.org/html/high-cost-free-parking-14665.html