Sopsaltningens effekt på cykeltrafiken: en analys av cykelflöden och olyckor i Stockholm


A winter maintenance method for cycleways becoming widespread in Sweden is “sweep-salting”. The method entails a front-mounted power broom for snow clearance and brine, pre-wetted or dry salt for de-icing. Traditionally in Sweden, ploughing and gritting is used for winter maintenance of cycleways and footways. At VTI the sweep-salting method has been evaluated in several research studies, focusing on the method, equipment and strategies in order to give recommendations regarding the implementation of the method. In the study presented in this report, this research has been complemented with analysis of accident data from Strada, from 2013 through 2017 and the winter seasons 2012/13–2017/18, including cyclists, pedestrians and moped riders as well as cycle flow measurements from Stockholm, with the objective to evaluate the effects of sweep-salting on cyclists.

All in all, our analyses of bicycle flow measurements from Stockholm show that sweep-salting contributed to increase the winter cycling. The analyses of accident data indicate that sweep-salting has also contributed to reduce the number of accidents due to skidding. Since the sweep-salted cycle routes are generally important for commuting resulting in relatively high cycle flows, it is likely that the accident risk per cyclist is lower after sweep-salting has been introduced. However, the available data was not extensive enough to quantify the effects. Nevertheless, it is clear that sweep-salting has not led to an increased accident risk. Fall accidents among pedestrians represent the major part of the accidents due to skidding and they occurred mainly on sidewalks in the inner city. We have also analysed weather data from VViS stations located along the road network around Stockholm and from one of SMHI's weather stations in Stockholm.



Social sustainability and just mobility

Welcome to a research workshop on Social sustainability and just mobility, 8–9 October 2019 in Linköping, Sweden

European Road Profile User's Group, ERPUG

Welcome to the sixth ERPUG meeting in Vilnius, Lithuania. 

Vision Zero for Sustainable Road Safety in the Baltic Sea Region

The second Vision Zero for Sustainable Road Safety in the Baltic Sea Region conference will be held in Tallinn, Estonia. VTI is part of the programme committee. 



VTI is a new partner in f3

Since the end of January, VTI is a partner in f3, the Swedish Knowledge Centre for Renewable Transportation Fuels. f3 is a national knowledge centre for collaboration between industry actors, universities, institutes, and government agencies committed to...


Tests are underway in VTI’s new bicycle simulator

A project is currently underway in which VTI’s recently developed bicycle simulator is being used to study the interaction between cyclists, and drivers. The aim is to investigate how different infrastructure designs and types of vehicles influence cyclist...


The goal is to increase diversity and gender equality within transportation in Europe

VTI is participating in the research project TInnGO – Transport Innovation Gender Observatory. It is the first major EU project of its kind relating to the transport sector, gender equality and diversity. The VTI project manager Lena Levin appreciates the...


A driving licence withdrawal can have major consequences in everyday life

A withdrawn driving licence can have negative consequences for a person’s ability to shape their own life. A study from VTI investigates how individuals with visual field loss have been affected by no longer being permitted to drive.


Measuring sleepiness – a challenge for researchers

Driver fatigue has been a research area at VTI for several years, and the researchers have studied various aspects such as the working hours of professional drivers, driver behaviour, accident risks, and the design of warning systems. They are now moving...


Knowledge in the fight against microplastics from road traffic

The Government has commissioned VTI to develop and disseminate knowledge regarding the emission of microplastics from road traffic.