SF is in the process of redefining the success of its road system.
Five years ago, the city decided that Auto Level of Service, the means used to define how well streets are being used based on the number of cars the roads can support on a daily basis, was not a reasonable metric of success. The SF Bike Coalition has experimented with a Bike Level of Service metric.
Mapping is an essential aspect of this issue, and social mapping could do a lot to open up citizen observation of how streets in SF are used.
What I don’t see are citizen maps.