Beläggningsslitage vintern 2007/2008 på högtrafikerade vägar i Stockholmsområdet


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.



Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.



Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.



The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...


New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...