Category Archives: Maintenance

Defining criteria that affect the importance and significance of cooperative road works warnings

Maintaining operability of the road network requires regular maintenance and improvement works, which can pose harm to traffic. A recent study produced background for an implementation and usage strategy for cooperative road works warnings in the Finnish road environment. Cooperative road works...

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Improved lighting for pedestrians and cyclists

Together with Lund University, researchers from VTI will study how outdoor lighting can improve the quality of walking and cycling trips at dusk and darkness. The end-product of the results will be recommendations for how footways and cycleways can be designed, maintained and illuminated in...

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How vehicles can avoid accidents on newly paved roads

Friction is an important property for road safety. VTI has investigated how roads change in the first few weeks after surfacing work has been completed. Researchers recommend posting warning signs when the road is opened and waiting at least three weeks to measure the friction of the road. A few...

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Business ecosystem of vehicular road condition information

In the WiRMa- (Industrial Internet Applications in Winter Road Maintenance) project, new vehicular road condition data observation methods are tested and studied. Such novel innovations and services require working business models and commitment of the business actors. A recent master’s thesis...

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Safety is key when Finns choose winter tyres

VTT Technical Research Centre of Finland Ltd. investigated motorists’ criteria for winter tyre choices. The results of a nationwide survey showed that traction on ice was the most crucial tyre feature, especially for motorists using studded tyres, whereas for users of studless winter tyres, the...

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Non-native plant species spread via transport systems

Lupins
Researchers at the Swedish National Road and Transport Research Institute, VTI, have compiled a report on non-native invasive plant species in Sweden and how they spread via transport systems. An invasive species is a non-native animal or plant species that has been introduced into an...

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Testing unmanned aircraft for roadside snowpack avalanche evaluation

Can unmanned aircraft systems (UAS) support the Norwegian Public Roads Administration’s (NPRA) mission to monitor snow avalanche hazards above their roads? NPRA staff recognized that UASs (often called drones) could reduce the need for avalanche staff to travel to dangerous avalanche zones and...

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New technology for road surface measurement tested

The Swedish National Road and Transport Research Institute, VTI, has tested a new scanning-laser technology for road surface measurement. The tests show the new technology for comprehensive transverse-profile measurement provides dependable values in measuring transverse profile and rut...

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New climate-proof solutions for hard surfaces

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 urban surfaces’ project...

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Road dust sampling equipment exported

The ability to sample and analyse road dust amounts and properties is vital to the effort to reduce levels of hazardous particles in our ambient air. The Swedish National Road and Transport Research Institute (VTI) has been performing such sampling for many years using the wet dust sampler (WDS),...

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