Vägytans makrotextur och dess variation: vägytemätning med mätbil

Download

Early fault detection, particularly at construction stage, can result in substantial savings for the Swedish Transport Administration. A contributing element to these savings is to have a homogeneous bituminous surface structure. For example, load changes, at low temperatures, can create a heterogeneous surface structure that gives rise to premature maintenance needs. Established methods or macro texture measurement models are not currently available in Sweden. Other countries have made advances in this field but they have not yet had an impact in Sweden.

An objective of this project is to maximize the possible use of existing measurement technology, quality and techniques associated with road surface measurement carried out by survey vehicles. In some cases, after a new surface has been laid, ‘object measurement’ is carried out by a survey vehicle. These measurements can be used to approve the surfacing contractor's performance in terms of longitudinal and transverse smoothness. A similar method, with specified values for homogeneous surface structures, will be developed in this project. An object is designed to provide a safe road surface throughout its design life expectancy. In order to be able to achieve this, it is important to discover surface shortcomings such as material separation. Four different models were tested in the project - all of which show promising results. Generally, all the models were able to identify the worst test surface. However, the actual "failed" road surface length of the object varied between models. This, above all, is a question of calibrating the models' limits. However, there is also potential to improve the model itself.

MEET US


5-6
Dec

Vision Zero for Sustainable Road Safety in the Baltic Sea Region

The conference Vision Zero for Sustainable Road Safety in the Baltic Sea Region is held i Vilnius, Lithuania. VTI is part of the organisation committé and also one of the speakers.

LATEST NEWS


2018-10-18

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.


2018-10-05

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...


2018-10-03

VR study to contribute to a better working environment for bus drivers

A study where bus drivers test autonomous driving in a VR environment may contribute to a better working environment with reduced stress on the driver and safer driving.


2018-10-02

Non-native plant species spread via transport systems

Researchers at VTI have compiled a report on non-native invasive plant species in Sweden and how they spread via transport systems.


2018-09-20

EU-project VIRTUAL: improving road safety with virtual crash tests

Crash tests are used to improve safety on roads. Therefore the EU now funds a research project to develop virtual methods of crash testing. VTI coordinates the project, called VIRTUAL. The project now invites experts interested in Human Body Modeling to join...


2018-08-28

EU project protects cyclists and pedestrians

According to the World Health Organisation, more than one quarter of road traffic fatalities in 2010 were pedestrians and cyclists. Every year, about 335,000 unprotected road users die because of traffic accidents, which shows the scale of the problem. The EU...