I am totally for this. It costs the city of Portland 40 million in road damage per year and its ODOT budget is only 11 million. Seriously the city of Portland only gets snowfall or freezing rain for 1 day out of the year. Studded tires cost $500+ anyways. Heres the report.
http://www.kgw.com/video?id=114859924&sec=547977
Government officials may be justified in establishing a ban on studs considering the significant damage they cause to the roads and the availability of alternatives.
Ironically part of the problem is government created. Studs damaging roads versus the minimal wear caused by chains (chains on semi-trucks is another story) and studless winter tires is a public policy issue. Some states charge a stud tax. The tax is too low in virtually all instances. Significantly increase the stud tax to more closely reflect the cost of damage done vs studless tires.
Use the funds raised to repair the road damage. Studless winter tires would then compare better economically when the studded tires external costs are tacked onto the purchase.
Some drivers will stick with studs and pay for their road damage. Some will switch to studless winter tires. Some, who likely didn't really need studded tires, will go with a good All-Season tire.
Why do people use studs? Because snow and ice happens. Because chains are a pain, and don't do you a bit of good with patchy ice. Because for passanger vehicles nothing gives you better traction on ice and thin slush. Because studable winter tires can be very cheap to purchase and have been around a long time. The habit is ingrained.
There is another downside to studs; they are worse than other tires in traction and braking when there isn't any ice or slush or snow. And, because folks are driving around for months in which the vast majority of the time their traction is worse than it couuld be, and what they are used to, and the fact that so many drivers on studs DON'T slow down like they should (watch them and see), I wonder if the net impact is actually fewer accidents. I am not so sure. Less accidents on ice. More accidents on dry/wet roads.
The ruts caused by studs is a good point brought up by a previous post. They can be very dangerous as I have experienced on the ruts on I-84 in the gorge a few years back (despite riding on excellent and near new SUV tires, very scary total loss of control but able to recover, guy a bit down the road not as lucky). Again, a public policy problem. Either the government simply fixes the roads faster; or raises the stud tax and uses the funds to fix the roads; or bans studs.
Surely it is ironic that studs used to prevent people from hitting ice at speed and flying into oncoming traffic create ruts in the road that hold water (plenty of that in Oregon) causing cars to hydroplane and go flying in oncoming traffic. Whoops.