Category Archives: Traffic and Traffic Control

Cherish the support for congestion charge

Posted on February 24, 2020 by nradmin
The introduction of a congestion charge in Stockholm had the intended effect of reducing congestion – even long term.  And after the introduction of the charges the public support steadily increased. This success story has attracted extensive interest from cities all over the globe.  However,...

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VTI launches new maritime research

Posted on December 3, 2019 by nradmin
VTI’s ambition is to create cohesive maritime research in areas such as transport economics, logistics, environment, behavioural science, and navigation. One current assignment concerns the validation of research in a major international EU-project, Sea Traffic Management. VTI’s maritime...

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Impacts of connected and automated driving on national road authorities’ policy targets

Posted on September 10, 2019 by nradmin
The main purpose of this article is to summarize state of the art on the impacts of connected and automated driving (CAD) on travel demand, travel behavior, traffic flow, safety and energy (reported in MANTRA deliverable D3.1). The review is based on ongoing and recently completed EU and national...

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How to make autonomous vehicles coexist with other traffic

Posted on May 28, 2019 by nradmin
The road infrastructure must be prepared for self-driving vehicles – especially in the beginning when the concepts are still new. Researchers are contributing to this through CoEXist, an EU-funded research project in which VTI participates as the largest partner. The gap between the rapid...

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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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