Beläggningsslitage vintern 2007/2008 på högtrafikerade vägar i Stockholmsområdet

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For many years, VTI has monitored road surface wear caused by the use of studded tyres. In order to examine current road surface wear from studded tyres, studies were carried out in the Stockholm region of Sweden. The investigations began during winter 2006/2007 and were complimented with further studies during winter 2007/2008. The aim of the investigations was to study - surface wear on the high trafficked routes in and out of Stockholm; - surface wear on relatively new surface courses and on surface courses which have been exposed for up to four years of winter traffic; - the percentage of passenger cars that use stud tyres. The investigation carried out on the routes in and out of Stockholm showed that surface wear has increased in recent years. Vehicles today are causing more surface wear per km compared to a number of years ago. One reason for this is that asphalt aggregates used today are not as proportionally durable than those used previously. This, together with increased traffic volume, means that the level of surface wear (including rutting) caused by studded tyres has increased compared with the early 2000s. According to the 2007/2008 studies, the depth of rutting on the high trafficked road network, caused by studded tyre use, was 2-3.5mm. Estimates have shown that studded tyre use in the Stockholm region of Sweden (November 2007 to April 2008) was on average 53%. This is perhaps a slight reduction in usage compared to previous years.

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