Svenska vägtillståndsmått, då, nu och i morgon: del 3: i morgon – år 2010 och framåt


On behalf of the Swedish Road Transport Administration, VTI has developed and proposed new indices of road surface measurement that better describe damaged or badly constructed road sections. The indices have been developed using data that is already collected during the regular road network surveys. The new indices can be used to describe road network conditions and changes during operation. To complement current indices, the report proposes four new indices and recommends changes in the use and/or calculation of two others. The main development principle was to use existing surveyed data and create either a new single index or indices based on a combination of other existing indices. The new indices must also correspond to a specific effect or property, for example safety risk. In connection with the development, thresholds for maintenance standards have also been suggested. The indices developed in this final phase of the project "New Indices of Measurement” that can complement existing indices are: • surface damage (small and large). • cross fall variation. • local unevenness (new definition). • surface water area. • edge depth (new definition). • IRI left (compliment to IRI right). This report describes new road condition indicators used in the period 2010 och onwards. Two earlier reports in this series describes indicators used in the period 1987–2005 (R717, 2013) respectively year 2006–2009 (R718, 2011).



ICTTP 2020

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



Report regarding government commission on the costs of traffic to society has been submitted

Since 2013, the Swedish National Road and Transport Research Institute (VTI) has had several government commissions to produce documentation on the costs to society caused by traffic. On 1 November 2018, the agency reported its latest commission, Samkost 3....


International standardisation efforts have many advantages

VTI participates in several international standardisation committees. The work is important because it helps to ensure that standards can be adapted to Swedish conditions and it also provides access to valuable contacts and networks.


China wants to work with the best

Through the CTS cooperation, VTI is gaining valuable research contacts with China. The country is facing major challenges in the field of road safety but also has enormous potential.


VTI participated in conference on electric roads

Systems with electrified roads are a relatively new concept and many projects have been launched in recent years. To stimulate the transfer of knowledge and collaboration, the Research and Innovation Platform for Electric Roads arranged its second...


ADAS&ME is tackling the interaction between people and technology

ADAS&ME is a major EU project focused on automation, the human condition and the human environment. The budget is EUR 9.6 million and VTI is the coordinator.


Users contribute to the development of train simulators

Apart from advanced driving simulators, VTI has developed several variations of train simulators which are used for training, education and research. In recent years, interest has increased drastically among major actors in the railway sector, and VTI has...