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Category Archives: Traffic and Traffic Control
A recent study evaluated the effects on driving speed of automatic speed enforcement on the street network in Helsinki. Installing automatic enforcement reduced speeding and in particular the proportion of excessive speeding. There was also a reduction in the proportion of speeding overall...
Good compliance, less environmental impact and better road safety. The same journey times on average, but fewer very long queues. A variable speed limit trial has shown a number of benefits – and actually no disadvantages. “This method should be used more,” says the researcher responsible...
A total of seven applications from the Swedish National Road and Transport Research Institute (VTI) have been granted by Horizon Europe, the European Union’s key funding programme for research and innovation. Grant applications from VTI have enjoyed a high success rate. Of 17 applications...
In recent years, there have been a number of serious road accidents due to motorists skidding off the road. The reason is believed to be that the country's roads are becoming increasingly smooth. VTI has investigated the cause of the problem in a pilot study. New designs of studded tyres, a rise...
Serious Games are games created primarily for a purpose other than entertainment. The CATAPULT research project uses board games and maps to rethink self-driving vehicles and the future of public transport. The games provide interesting insights, according to the first Swedish test participants...
Literature study on practical impacts of driving automation on traffic flow efficiency and emissions
Marketing and media have raised high expectations towards automated vehicles lowering road traffic emissions and improving efficiency, in addition to safety benefits. However, there is little evidence yet exists to support these claims, as found in a recent literature study. Kehä 3 - E18,...
It is not always easy for advanced driver assistance systems to read road markings. Sunshine, shadows and rain are just some of the factors that can affect readability. The systems are also occasionally confused by longitudinal cracks. VTI researcher Sara Nygårdhs is project manager for...
The VTI train simulator was included in a research study during which train drivers were able to try out new designs of the European Rail Traffic Management System (ERTMS) signalling system. The aim is to create optimal signalling projects combined with the best possible work environment for the...