Text 33221, 27 rader
Skriven 2010-01-06 19:40:40 av bill swisher (1:124/311)
     Kommentar till en text av Glen Jamieson
Ärende: Re: SLICK IS SLICK  00106
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On 1/6/2010 11:26 AM, Glen Jamieson wrote:

> I understand that principle.  What, then, is the difference between
> standard tyres and "all-weather" ones?

Generalization:  Standard tires are principally designed to bleed excess 
water from under the tire and provide maximum road contact with the 
tire.  All-weather tires are designed to have LARGE places to pack 
excess snow, and shed it during the rotation of the tire.  Thus 
providing a minimal amount of traction, at least there's friction within 
the snow/ice structure because of shear forces.  It's just as crappy on 
ice as everything else, except studded tires which are legal in Alaska 
during winter months.

> I suppose that once a car starts to slide, all is lost.

No, there's driver competence involved, naturally, which can help for 
recovery.  In northern climes, at least in Anchorage, the police are 
trained to handle slick conditions, all month of the year training is 
provided.  At work I would often drive by a place where they had cars 
fitted with specialized frames which would take about 80% of the weight 
and transfer it to wheels which rotated 360 degrees.  Then they would 
take the car and run it around a wet road course.  Things got slippery, 
or as some folks down in your neighborhood would say on their road signs 
"Greasy".
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