Utvärdering av städmaskiners förmåga  att reducera vägdammsförrådet  i gatu- och tunnelmiljöer: En fältstudie i Trondheim 2016


In May 2016, VTI conducted a field study in Strindheim tunnel and on Haakon VII street on behalf of the Norwegian Road Administration in Trondheim aiming at comparing and evaluating the ability of cleaning techniques to reduce the road dust depot in street and tunnel environments. 

The result showed that after a first cleaning effort in the tunnel with the BEAM rotorclean (roadway only), a larger dust load was detected than before cleaning. This is believed to be due to the flushing of dust from the edge of the road or the removal of dust cemented in the road surface texture. After a second cleaning effort, where the walls and ceilings are cleaned and the road is cleaned again, a reduction in dust load could be distinguished, but only in the roadway, not near the edge.

On Haakon VII street, two different cleaning machines, Disa Clean and Val’Air rotor cleaner were used, the former being a dry vacuum sweeper and the latter using rotary high pressure washing combined with vacuum. Sampling was conducted in six fields. The result showed that greatest effect was achieved with Disa Clean in combination with high pressure rinsing as well as with Val’Air rotor cleaner at a driving speed of 3 kilometer per hour. In both cases there were significant differences in dust storage before and after cleaning.



Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...


New research programme for more efficient travel

The Swedish National Road and Transport Research Institute (VTI) is playing an important role in a major new research programme to find radical solutions leading to fewer trips and more efficient travel, along with tools to enable better use of roads and...


Simulator used to practice emergency responses safely

Emergency responses of the police, ambulance, and rescue services are associated with a high risk of accidents, but practicing them in real traffic is neither safe nor permissible. A simulator-based method developed by the Swedish National Road and Transport...


Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.



The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...