Category Archives: Traffic and Traffic Control

Highway middle barriers substantially increase road safety

Posted on May 27, 2019 by nradmin
VTT Technical Research Centre of Finland investigated the safety effects of middle barriers on non-motorway highways in Finland. The results indicate that highway middle barriers greatly improve road safety and are particularly effective at reducing fatal accidents, with four in five such accidents...

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Experiences from automated enforcement in urban areas

Posted on March 8, 2019 by nradmin
Enforcement on the Finnish street network is facilitated by the police force’s latest surveillance equipment, which is better suited to urban environments. Speed control and combined speed and red light enforcement seem to improve road safety on the street network. Red-light enforcement alone is...

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Accident risks of different weather conditions

Posted on December 6, 2017 by nradmin
According to a recent study, poor weather conditions increase the accident risk more on motorways compared to two-lane and multiple-lane roads. The study analysed the accident risk from a single drivers’ point of view and the relative accident risk was related to the time spent on the road...

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Pioneering research on bicycles

Posted on May 29, 2017 by nradmin
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

Posted on February 22, 2017 by nradmin
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 increases...

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Dense automatic speed enforcement effectively reduces speeding

Posted on February 22, 2017 by nradmin
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

Posted on December 2, 2016 by nradmin
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

Posted on March 1, 2016 by nradmin
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 distribution...

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Better Traffic Flow with Adaptable Speed Bumps

Posted on October 16, 2014 by nradmin
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 are...

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Criteria for Closing Mountain Passes Based on Friction Measurement and Crosswind

Posted on April 7, 2014 by nradmin
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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