Sorry to hear this. Renegade behavior of the wild west made the town. Good luck taming that heritage.
Have made many trips to Silverton and the OHV traffic has never been any worse or better than the cage traffic. There is no peace and quiet in any town that allows traffic. Once again the choice is made to forgo revenues rather than enforce existing statutes (noise and reckless behavior). That same enforcement will now be enforcing a ban and without the ohv crowd there will be reduced revenue to pay for it.
FWIW, The town will survive as it is a top tourist destination. The OHV crowd will move on to make another town until banned. And, the cycle repeats.
I'm guessing the peace and quiet crowd will be banning the rowdy bars next. Can't have that in the mountains after all.