Winter Road Condition Model

Staffan Möller

The large-scale project, the Winter Model, will result in a model for assessing the most important effects and their monetary value of changes of winter maintenance strategies and operations. The winter road condition model is the central part of the Winter Model. The road condition model will characterize the state of a winter in terms of a road condition description hour by hour. The road condition model provides input data for the other models where different effects such as accident risk, travel time, fuel consumption, and environmental effects are assessed. In the first stage we intend to develop a model that describes how road conditions are affected by weather, maintenance measures taken and traffic on two lane rural roads with a width of 7 to 9 m and speed limit of 90 km/h. To a great extent, the basis for developing the winter road condition model will be data already collected from nine observation sites with the purpose of developing the accessibility model. For several periods data from these observation sites contain information hour by hour regarding weather, traffic flow, initial road condition, maintenance measures taken and specified types of road condition development mainly connected with snow ploughing and anti-icing measures. Additional information, mostly development of ruts down to the pavement in hard-packed snow or thick ice caused by vehicles with studded tyres, and conditions for a wet or moist road to dry out will be collected by field studies as from the winter season 2002-2003.



Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.



Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018

VTI’s Senior Research Leader Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018 for his work on research into tyres and road surface.


Steps need to be taken to increase traffic safety of automated cars

Several steps are necessary to ensure that automated and connected cars will lead to increased traffic safety – everything from ensuring that technology takes vulnerable road users into account, to new forms of driver training. This has emerged in a position...


FALCON examines challenges in the transport sector

VTI is one of several important partners in the major FALCON project*, whose purpose is to create knowledge and insight regarding the transport sector. In an initial subproject, VTI has produced a manual on transport, logistics and multimodality.


VTI joined research cooperation in China

In December 2017 VTI became a member of China-Sweden Research Centre for Traffic Safety (CTS).


Swedish German research collaboration on Electric Road Systems

The project “Swedish-German research collaboration on Electric Road Systems” (CollERS) has now officially started. The goal of the project is to increase the common knowledge around Electric Road Systems by cooperation between Germany and Sweden and to...


Electric Road Systems Conference 2018

After a successful first conference in June 2017, the Swedish research and innovation platform for electric roads is arranging the second dedicated International Conference on Electric Road Systems (ERS) June 13th and 14th 2018.