Hey, this is like an idea I posted a while back, having a 3rd party traffic enforcement agency, but state-wide.
We're too anal about traffic violations anyway, but then it's really not about traffic enforcement. That is just an ancillary concern, a shoe-in...
And that is why stops end up being so dangerous. If all you're going to get is a traffic citation, criminals probably wouldn't be so reactive, especially when the stop becomes a life changing event. I don't see so much of a problem with parking tickets, even when the driver is present. People aren't ambushing meter maids.
And then, what if there is criminal activity or an arrest needs to be made (I'm not calling the stop an arrest, redefine the laws...), cops would be called to handle that. If they run, follow and advise police and it's then business as usual.
I'd expect the vast majority of people to just take their lumps, or just ignore or run, and then police can step in.
Some may get shot, cost of business if that's what you want to do.
I could never understand the urgency of having to resolve a situation immediately anyway. Most of the time the individual is identified, either by licence or plate, and can be contacted under better circumstances at some later time, or just covertly followed. Like if the officer sees a gun or drugs, just handle it cool and get your backup all in place and ambush the bad guy later. If he's really a bad guy, he can be put on a watch list and collect more data, etc...
But I think it's a bad idea for one city to do something like this.