Snow tires
From Wikipedia
Snow tires (winter tires) are tires designed for use in winter conditions, such as snow and ice.[1] They are an alternative to the use of snow chains.
Winter tires are generally tires with a different rubber composition from all-weather tires. The rubber in winter tires is softer, which means that it will provide better traction at lower temperatures. Winter tires provide more small-tread areas, allowing for more traction on snow; and in wet conditions allowing water to escape from under the tire more easily. This reduces the risk of aquaplaning. Winter tires won't prevent skidding on ice and snow, but greatly reduce the risk.
Regional conventions
In the United States and Canada, a "snowflake on a mountain" symbol means that the tire has exceeded the industry requirement for a reference (non-snow) tire.[2]
The province of Quebec was the first to implement a law requiring drivers to be equipped with snow tires during the Winter period.[3]
Since July, 2008, the Czech Republic started using a new road sign which indicates a requirement to use winter tires in the marked areas during Winter season. This sign is used in mountain and highland ranges as a rule. The duration of obligatory winter tire use was originally November - April (Ordinance 208/2008 Sb.). This was later changed to November - March (Ord. 91/2009 Sb.).
References
- ↑ http://www.cbsnews.com/stories/2007/02/12/health/healthy_living/main2464029.shtml?source=RSS&attr=_2464029
- ↑ http://www.cnn.com/2007/LIVING/wayoflife/12/21/snow.tires/
- ↑ http://www.mtq.gouv.qc.ca/portal/page/portal/grand_public_en/vehicules_promenade/securite_routiere/securite_conditions_hivernales/reglement_utilisation_pneus_hiver
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