Svenska vägtillståndsmått då, nu och i morgon: del 1: då - år 1987-2005


Road surface monitoring has been conducted in Sweden at least since 1929 and regularly since 1987.  This report describes the monitoring methods and indicators that have been used to describe the road surface condition during the years 1987 to 2005, in Sweden.  A road and its surface have various conditions depending on how well constructed and maintained it is and when in time it is observed.  To assess the condition, objective indicators are needed.  The ultimate goal is to produce objective data that can be used to decide if goals are achieved, which means if maintenance strategies have been effective or not.  But other goals are to support as well as being part of the pavement management work.  Monitoring techniques and indicators have been developed with respect to the accessible and usable technique present.  Therefore compromises have been necessary to make practically implementable methods.  As stated earlier the need of information changes with time due to the ever increasing needs from the society.  A development of indicators can be justified by considering the changes with the need of higher speeds (safety), longer durability (more and heavier traffic loads) and less environmental impact (climate change etc.)  This report describes the monitoring methods and indicators that have been used to describe the road surface condition during the years 1987 to 2005, in Sweden.  Both the indicators and methods are described as well as related documents with requirement and known changes in definitions during this time.



ERPUG 2017

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. 



Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...


Tomas Svensson new director-general

Tomas Svensson was today appointed Director-General of VTI. Tomas has been acting Director-General since January 2017. 


Crash testing bicycles at VTI

For the first time single bicycle crashes have been simulated at the VTI crash safety laboratory.


A case study exploring firefighters’ and municipal officials’ preparedness for electrical vehicles

A VTI-study presents a social perspective on new vehicle technology. It explores the self-reported preparedness of the fire departments (i.e., rescue services) in Sweden’s three largest cities regarding rescue operations involving electrical vehicles (EVs).


Pioneering research on and about bicycles at VTI

Under what circumstances might cyclists lose tyre grip? What actions could then be taken to prevent a crash? VTI is currently developing a theoretical model of the behaviour of bicycle tyres during braking and steering in different situations and on different...


Virtual pedestrians create efficient stations

If more people are to choose sustainable travel, then the public transport stations of the future must be designed so that pedestrians can get where they are going quickly, without congestion or queues. The Swedish Road and Transport Research Institute (VTI)...