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).



The 6st Humanist Conference

The 6th HUMANIST Conference will take place 13-14 June 2018 in the Hague, The Netherlands. The scope of the conference covers a wide range of topics on Human Factors in Transport. Tania Willstrand and Alexander Eriksson will present their research results.



Enkät om trafiksäkerhet genomförs i 50 länder

At the Road Safety on Five Continents Conference, RS5C, one entire session presented a large survey of road users' attitudes in 38 countries. Results show large differences between countries in many areas, both regarding behavior and attitudes. A new survey...


Good results with alcohol interlock program according to Swedish study

An alcohol interlock program makes it possible for drink driving offenders to continue their everyday lives. In a Swedish study most of the participants were satisfied with the program and experienced improved health. They also reported drinking alcohol more...


Traffic safety in the spotlight

Today the Conference Road Safety on Five Continents (RS5C) opened in Jeju Island, South Korea. More than 220 participators have come from all over the world to present findings and learn about traffic safety. Dr. Young Tae Kim, Secretary-General of the...


VTI will develop simulators for ambulance staff

VTI has initiated a pilot study for paramedics with the Centre for Teaching & Research in Disaster Medicine and Traumatology and Linköping University. The aim is to give ambulance staff the opportunity to practice critical medical tasks in a moving vehicle in...


Unique electrified road opens in Sweden

The world’s first electrified road recharging the batteries of cars and trucks while driving opened in Sweden. The Swedish Minister for Infrastructure, Tomas Eneroth, was at the formal inauguration of the electrified road on April 11, 2018. VTI is one of 22...


Swedish road safety spreads internationally

Sweden is a leading country in terms of road safety, and the research conducted by the Swedish National Road and Transport Research Institute (VTI) has contributed to increased safety. VTI’s remit includes disseminating research results and keeping up to date...