There is a massive difference between parking somewhere else for a time and dumping your car somewhere for the entire working day. A street that might seem empty when you get there at 9am (when most of the residents have left) is quite different when it has filled up with commuters and then legitimate day-time traffic (tradespeople, residents returning etc) are quite unable to find spaces. Had this happen to me this morning in fact. Am ill, so did the school run in the car instead of walking as we usually do. Returned home and not a space to be found, while cars circled like vultures looking for a gap. I asked a couple if they were residents and both said "no" before heading off to the station. Ah well, standard tragedy of the commons. If it continues like this the street will soon be resident permits only, and we'll all have lost out.