LA.StreetsBlog.org [3] featured a conversation with Urban Planning Professor Donald Shoup about downtown L.A.s' new ExpressPark system.
The yearlong ExpressPark program, slated to begin next summer, will use new meters and a network of wireless pavement sensors to keep track of parked vehicles in real time. The program will feature adjustable parking rates, or "dynamic pricing." When parking demand increases, meter rates increase; when demand drops, rates drop.
Links:
[1] http://luskin.ucla.edu/urban-planning
[2] http://luskin.ucla.edu/school-public-affairs/urban-planning
[3] http://la.streetsblog.org/2011/08/24/interview-with-donald-shoup-los-angeles-making-strides-with-expresspark/