Kontroll och uppföljning av entreprenader - del 2, tillståndsutveckling, mätfel och risker: Vägytemätning med mätbil

Thomas Lundberg
Christian Glantz

The Swedish Transport Administration aims to increase the number of design build contracts. To get a functioning control device around the contracts, well defined requirements must be set for the warranty period of the road. In this survey we focus on functional requirements that are set for design build contracts and which can be checked by means of a road surface testing.

In the report, measurement errors are highlighted in object measurement (control measurement). The measurement error is divided into different components: random, systematic and variation between different suppliers. Risk assessment is also discussed where calculations of the risk of error assessment of a section are presented.

Finally, it is presented how the results of the condition (evenness) affect the future development of the road and what initial values we can expect from a design build contract and maintenance work. We see that a road of good evenness, longitudinally and transversally, gives a lower development rate during the life of the road.



Winter Road Congress 2020

The congress is held in Tempere, Finland. Anna Niska, senior research leader at VTI, lectures on sweep-salting of cycleways.

Electric Road Systems Conference (ERSC2020)

Welcome to the 4th Electric Road Systems Conference (ERSC2020), 12–13 May 2020 in Lund, Sweden

ICTTP 2020

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



VTI and SAFER are organising the world’s largest traffic and transport psychology conference in Gothenburg

In August 2020, VTI and SAFER are organising the International Conference on Traffic and Transport Psychology (ICTTP) in Gothenburg. ICTTP is held every four years, and this year is the seventh conference.


Kilometre tax is expected to have the greatest environmental impact

How can environmentally differentiated charges and other policy instruments reduce the freight transports' environmental impact? VTI has participated in a research project on this subject.


Increasing cycling among the elderly

Cycling is good both for your health and the environment. It can give you freedom and the ability to get out and about, not least for the elderly. But with age, it can become harder to choose your bike over your car. Maybe your fitness and balance are not...


VTI launches new research

VTI's ambition is to create cohesive maritime research in areas such as transport economics, logistics, environment, behavioural science, and navigation. One current assignment concerns the validation of research in a major international EU-project, Sea...


New study examines the mental health of seamen

Working at sea and being away from home for long periods can be mentally straining. In a preparatory study, researchers at VTI will examine how prevalent mental ill health is among ship crews in Sweden, and how the shipping companies' preventative efforts are...


Measurement of fatigue among bus drivers in London provides tools for better traffic safety

VTI has participated in a study of fatigue among London bus drivers. The study has given Transport for London the tools to implement measures that deal with fatigue among the city’s bus drivers.