Modeling the exposure of roadside environment to airbone salt: Case study


A field study was performed in order to investigate the relationships between the salt use, the mechanisms affecting the salt emission, dispersion and the salt exposure in a modeling approach. The salt was collected on gauze filter salt vanes at distances of 2.5 m to 100 m from the road, allowing a time resolution of 30 minutes to 24 hour exposure time. The results will be implemented in a winter maintenance management model under development by the Swedish National Road and Transport Research Institute (VTI). The results showed that the roadside exposure to airborne salt is strongly related to the wind direction. The road conditions of packed snow and thin ice seemed to temporarily abate the roadside exposure by capturing the salt on the road surface. Even at a distance of 100 m from the road a positive relation of the wind sum and chloride deposition showed on days with strong winds. The modeling approach indicate the importance of residual salt, traffic, road surface characteristics, and wind for roadside exposure but also that there are several aspects of these variables that need further investigations.



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.