Profilmätning på sträckor med gummimodifierat bitumen på E4 Uppsala och E6 Mölndal: uppföljning efter tre års trafik


On behalf of the Swedish Transport Administration, VTI has performed transverse profile measurements and wear measurements on test sections with rubber modified asphalt pavements on E4 Uppsala, Rv77 Knivsta and E6 Mölndal. The purpose of the surveys is to evaluate the different types of wearing course regarding rutting and wear of studded tires and durability / stripping (loss of surface aggregate). The conclusions of the results of the measurements so far do not show any beneficial effects of the modification with rubber in bituminous wearing course, instead these sections have performed worse than the reference section with standard bitumen during the first almost three years. The measured profiles from E4 Uppsala and E6 Mölndal showed an obvious rutting from wear on the surface during all three winter periods. The wear is less clear on the sections on Rv77 Knivsta because of the broader cross road surface and lower traffic intensity. On most test sections, it is a relatively small spread in the propagation of wear between the measured profiles within each test section. Within a few sections, however, the spread is slightly larger and it looks mostly like to apply sections of GAP on E4 Uppsala.



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.



Modal shift for an environmental lift?

Investigations in Sweden and other countries suggest a shift of goods transport from road to rail and waterborne transport to reach environmental and climate objectives. VTI is leading a new project to investigate how the modal shift can contribute and what...


Automation and digitalisation are making rail competitive

Road transport is developing rapidly and its productivity has increased sharply. Rail transport, however, has not developed at the same rate. Automation and digitalisation are essential if rail freight in Europe is to survive.


New research is creating a driverless logistics chain

The research project Born to Drive has come up with a system that allows new cars to move, without a driver, from the production line out to the parking area prior to being transported elsewhere. The vision is to automate the entire logistics chain from...


VTI testing automation in EU project

VTI is leading a series of tests in a major EU project on automated driving. The first driving tests were carried out n a test track in Slovenia in December. The project will focus in part on acceptance among different groups in society, in part on...


Freight transportation on road and rail analysed

Freight transport accounts for a large proportion of the emissions, noise and congestion produced by road traffic. Transporting freight in larger but fewer lorries could reduce the problem. At the same time it might entail freight being diverted from more...


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...