SFpark is a $23 mil­lion pro­gram to use tech­nol­o­gy to stream­line park­ing in San Fran­cis­co that uses pave­ment sen­sors in park­ing lots and metered street park­ing to track and relay data about spaces that are open. This info will be con­veyed to dri­vers via road signs ini­tial­ly, then via the Web and mobile devices.