Vinterväghållning och expertsystem: en kunskapsöversikt

Magnus Ljungberg

The aim of the report is to clarify present knowledge in winter road maintenance and expert systems. On the basis of this, the possibilities of developing an expert system for winter road maintenance will be investigated.

The main areas studied are:

• Road climatology and road weather information systems

• Winter road maintenance methods

• Influence of winter road maintenance on the community and road users

• Expert system for winter road maintenance.

Even in an international perspective, Sweden has an advanced level of winter road maintenance. Together with Norway and Finland, Sweden is in the front line in several areas, primarily road weather information systems and chemical de-icing methods.

Development in mechanical de-icing has been slower, but in Sweden a number of interesting methods with better and longer influence than traditional methods have been developed in recent years. The new methods are Hottstone and Friction Maker.

Knowledge in snow clearance is poorer in Sweden than in Norway and the USA, among other countries.

The major shortcomings in knowledge concern the influence of individual winter road maintenance measures on road condition.

Very few scientific reports have studied the influence of salt dosage, durability of measures and the clearance capacity of snowploughs.

Today, there are no expert systems for winter road maintenance in the world, although there is a need for these. The reason is that such systems require an efficient road weather information system and in depth knowledge of winter road maintenance.



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...