Shenzhen gov are using facial recognition to detect pedestrians running through the red light[0]. Their even release high quality pictures without mosaic in the first version, just a few days ago.
Note that the facial ID obviously doesn't work very well as they are only posting the affirmative matches. Every intersection in China has far more than two jaywalkers per day.
I think the social credit thing sounds horrible, but I don't think there's anything wrong with automatic detection of traffic violations. Traffic codes are here to help people stay safe, they shouldn't be conditional on people seeing a cop.
[0]https://www.stc.gov.cn/facei/