Makrotexturens möjlighet att identifiera låg friktion: tillståndsmätning av vägytan


The Swedish Transport Administration want to describe the friction condition of the entire national road network. A nationwide friction measurement is practically difficult to manage and very costly, while we are already measuring road surface macrotexture. In this project, we test whether the macro texture (MPD, Mean Profile Depth) can be used to describe the friction condition of the road network. We have not been able to show this correlation but we present other interesting findings that give a piece of the puzzle for the Swedish Transport Administration how they can and should deal with the friction issue. We see, among other things, that the risk of low friction is greater on road sections with low MPD values and especially on roads with surface dressing that has bleeding patches. Furthermore, we describe the friction risks involved with different coatings and how these might be handled.



Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...


New research programme for more efficient travel

The Swedish National Road and Transport Research Institute (VTI) is playing an important role in a major new research programme to find radical solutions leading to fewer trips and more efficient travel, along with tools to enable better use of roads and...


Simulator used to practice emergency responses safely

Emergency responses of the police, ambulance, and rescue services are associated with a high risk of accidents, but practicing them in real traffic is neither safe nor permissible. A simulator-based method developed by the Swedish National Road and Transport...


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...