China fact of the day

That the [Shanghai pedestrian traffic] guards have no powers of arrest, or even the ability to issue tickets, allows many pedestrians to feel free to ignore them. What is worse, they are frequent targets of aggression from crowds of sneering and cursing pedestrians. According to the city government, they are physically assaulted at a rate of about 20 times a month. [emphasis added]

Here is the full and fascinating story of the traffic mess we call Shanghai.  Any predictions on when the city turns into a mass of frozen gridlock?  Or will they develop the technical infrastructure to institute road pricing, as Singapore has done?