Perfomance parking has not has as big an impact as was expected in San Francisco. Even with high rates, popular blocks still fill up, and other blocks remain under-filled even at low prices.

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Each time San Francisco has adjusted the rates, the spread between the least expensive and the most expensive blocks has increased. After this latest adjustment, parking rates will vary from a low of $0.75 up to $4.25/hr. To date, the most crowded blocks have typically continued to be crowded even after adjusting the prices upward, while under-occupied blocks have not filled up even after dropping the price.

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This performance parking experiment is demonstrating that on high-demand blocks, drivers are very insensitive to price increases. The experiment is also showing that parking demand is highly localized, with price differences of as much as 100% continuing even through two adjustment cycles.

On the other hand, there's still more to learn.

Even if blocks are missing their target occupancy, performance parking could still be having a positive effect. Are the prices leading to a higher turnover in available spaces? And if so, are the available spaces leading to a reduction in drivers hunting for parking, as the theory suggests?

http://greatergreaterwashington.org/post/13019/san-francisco-finds-performance-parking-less-responsive-than-expected/