47c4355b@news.povray.org...

>  Also, you assume that traffic accidents are cheaper for the government
> than having to re-pave once in a while. Do you have any hard numbers on 
> this?

Here's the ruling that banned studded tires in Ontario in 1971.
http://pubsindex.trb.org/document/view/default.asp?lbid=111434

Basically, this is a typical case of (probabilistic) risk assessment. It's 
an entire field of research and it goes beyond than simply balancing lives 
against budget. Unless there's a specialist of this particular case here I 
don't think that any of us have the data and the skills to run the 
simulations...

G.

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