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.



Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.



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...


New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


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...