UCLA Urban Planning researchers Donald Shoup and Michael Manville warn against free parking and increased investment in parking structures. According to Shoup and Manville, lower parking costs incentivize driving and tend to place an undue burden on those who don’t want or can’t afford a car by passing that cost on to them.
Source: The war on city parking just got serious Wired, 28 Sep 2016
Additional coverage about car parks:
Lots to lose: how cities around the world are eliminating car parks The Guardian, 27 Sep 2016