Trafikverkets beräkningsmodell för ersättning av vinterväghållningsåtgärder, version VädErs-Kombination, Underlag Väderindex och VädErs 2016: beskrivning med exempel och kommentarer

Staffan Möller

The Swedish Transport Administration has decided to further develop the calculation model used to regulate the costs of winter road maintenance measures between clients and contractor. In connection with the development of the new version of the calculation model, VädErs 2016, a new computer program was made. In this report the rules and procedures used in VädErs 2016 are documented. Also the rules and procedures used in the two earlier versions of the calculation model, VädErsKombination and Underlag Väderindex, are documented in the report. A good calculation model, based on this winter's character, for regulating costs for winter road maintenance measures between client and contractor requires two well-functioning sub models. - 1. A sub model describing the weather during the winter season. - 2. A sub model that links the weather descriptions to the needs to take measures, not necessarily in a 1–1 ratio. The report shows in detail how the three versions of the Swedish Transport Administration’s calculation model work from the start, weather raw data, to the final phase, so called weather outcomes, the basis for compensation. The following weather raw data is used in the calculation model: Air temperature, road surface temperature, dew point temperature, type of precipitation, amount of precipitation and wind speed.



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.