specifications

http://i.imgur.com/zZldR.jpg

Apparently they had a DPT bag placed over the meter they were parked in, though I'm sure the meter was fully functional. Looks like they get free parking since they run the parking systems and DPT in SF!

If you don't know what serco is, this video should explain: http://www.youtube.com/watch?v=szNLMtgI7hU