Vägbanereflektorer: trafikantbeteende, upplevelse och bidrag


The overall aim of this study was to increase the knowledge about road studs’ potential impact on road user behavior, how they are perceived and the possible contribution they make to other road equipment. The study consisted of three parts. Part one was a literature study, part two was a field study with speed measurements in a sharp rural road curve equipped with road studs either on the center or the right edge line, and part three was an interview study. The results from the literature review showed that there were relatively few studies on road studs and road user behavior. The general conclusion was that the use of road studs seems to increase speeds slightly, while the lateral position will be shifted slightly in the direction from the markings. The results from the speed measurements in a sharp curve equipped with active illuminated road studs showed no significant differences in speed in any of the conditions. The results from the interview study showed that the first contact with the studs was perceived that something had been done in order to attract attention on something, which created curiosity, but also uncertainty about what to expect and how to act ahead. An impression of a slight help to determine the road's stretching before entering the curve was expressed, but at the same time, some competition from delineator posts of the visual space was experienced which created a sense of visual overload. It was thought that non-familiar drivers, probably would reduce the speed slightly ahead of the curve when they noticed the road studs. Familiar drivers were regarded not to be affected in this sense. Regarding what unique contribution the use of road studs could give, it was expressed that they could help road users by warning that a sharp curve that required special adaptation approached. However, the overall perception was that road studs most likely would not contribute much in improving the visual guidance through curves. Instead, it was considered that road markings and delineator posts would usually be sufficient.



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.