On July 11th 2011, SFpark announced the first set of meter rate adjustments. Meter operational hours were divided into six distinct rate periods, and the hourly price of metered parking in the project’s seven pilot areas was adjusted on a block-to-block basis in response to parking demand during each period:

• +25¢ in periods of 80% or more occupancy
• No change in periods of 60-80% occupancy
• −25¢ in periods of 30-60% occupancy
• −50¢ in periods of less than 40% occupancy

I created this visualization using the d3.js framework and data provided by SFpark. Click for full size.