NanoWear: nanopartiklar från slitage av däck och vägbana

Eva Brorström-Lunden
Andreas Dahl
Anders Gudmundsson
Christer Johansson
Per Jonsson
Erik Swietlicki

Particles from road and tire wear have in recent years come to the fore as an important and relatively unexplored contribution to air particulate pollution. Mechanically generated wear particles are relatively coarse (>0.5 microns), but in controlled trials in VTI's road simulator it has been found that an ultra-fine fraction (< 100 nm) of particles is formed from tyre and pavement wear. This project was initiated to identify the source of these nanoparticles. The results show that the nanoparticles of the size 30-50 nm occur only from tests with studded tyres. One of the two tested Nordic unstudded winter tyres produced an even finer particle fraction (<10 nm), while the other unstudded winter tyre type did not give rise to nanoparticles. Tests with summer tyres did not result in the formation of nanoparticles. It is clear that the fine particle fraction contains higher relative concentrations of sulphur, which is present at relatively high levels in both bitumen and tyres. It is unclear whether the ultrafine particles formed from studded tyre wear of road pavement in the road simulator also occur in real traffic. If so, this may affect the assessment of health effects from different traffic related particle sources.



Winter Road Congress 2020

The congress is held in Tempere, Finland. Anna Niska, senior research leader at VTI, lectures on sweep-salting of cycleways.

Electric Road Systems Conference (ERSC2020)

Welcome to the 4th Electric Road Systems Conference (ERSC2020), 12–13 May 2020 in Lund, Sweden

ICTTP 2020

ICTTP, International Conference on Traffic and Transport Psychology, is held in Gothenburg, Sweden.



VTI and SAFER are organising the world’s largest traffic and transport psychology conference in Gothenburg

In August 2020, VTI and SAFER are organising the International Conference on Traffic and Transport Psychology (ICTTP) in Gothenburg. ICTTP is held every four years, and this year is the seventh conference.


Kilometre tax is expected to have the greatest environmental impact

How can environmentally differentiated charges and other policy instruments reduce the freight transports' environmental impact? VTI has participated in a research project on this subject.


Increasing cycling among the elderly

Cycling is good both for your health and the environment. It can give you freedom and the ability to get out and about, not least for the elderly. But with age, it can become harder to choose your bike over your car. Maybe your fitness and balance are not...


VTI launches new research

VTI's ambition is to create cohesive maritime research in areas such as transport economics, logistics, environment, behavioural science, and navigation. One current assignment concerns the validation of research in a major international EU-project, Sea...


New study examines the mental health of seamen

Working at sea and being away from home for long periods can be mentally straining. In a preparatory study, researchers at VTI will examine how prevalent mental ill health is among ship crews in Sweden, and how the shipping companies' preventative efforts are...


Measurement of fatigue among bus drivers in London provides tools for better traffic safety

VTI has participated in a study of fatigue among London bus drivers. The study has given Transport for London the tools to implement measures that deal with fatigue among the city’s bus drivers.