Category Archives: Traffic and Traffic Control

Pioneering research on bicycles

Under what circumstances might cyclists lose tyre grip? What actions could then be taken to prevent a crash? The Swedish National Road and  Transport Research Institute is currently developing a theoretical model of the behaviour of bicycle tyres during braking and steering in different...

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Nordic capitals are prioritising pedestrians

Street with people in Stockholm
Helsinki, Stockholm and Copenhagen are all working strategically with pedestrian prioritising and urban life. Car free city centres are high on the political agenda in many Nordic cities and in a range of European countries. New policy measures are applied and in many cases, significant...

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Dense automatic speed enforcement effectively reduces speeding

Car passing an automatic speed camera
A recent before-after study supports the earlier concept that automatic speed enforcement is an effective measure for reducing driving speeds and thus improving road safety. Since the introduction of automatic speed enforcement on a highway in Finland, the average share of vehicles speeding by over...

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Collaborative Approach for Better Mobility Solutions

The TEAM project (Tomorrow’s Elastic Adaptive Mobility, 2012-2016), co-funded by the European Commission, created building blocks for connected and collaborative mobility. Eleven applications were developed for travellers and traffic management professionals to enable better mobility solutions....

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Palm Distribution of Road Conditions and its Application in Incident Risk Analysis

Traffic accidents can be caused by different factors. By analysing these factors a method for incident risk management can be developed. This method can be used by traffic management centres to proactively reduce traffic incidents. In two previous studies a method to apply the Palm...

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Better Traffic Flow with Adaptable Speed Bumps

Adapable speedbumps.
More alternatives are emerging that lack the downsides of permanent speed bumps. VTI has examined the types of available dynamic speed bumps and assessed which could suit the Nordic climate. An alternative speed bump can be either passively or actively dynamic. Passively dynamic speed bumps...

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Criteria for Closing Mountain Passes Based on Friction Measurement and Crosswind

In 2006 there was a bus accident on a mountain pass in Norway called Dovrefjell. There was strong wind combined with ice covered road. As a result of this very strong crosswind and the slippery conditions the bus lost the grip on the front wheels and the driver couldn’t control the bus. The bus...

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