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Swedish capital uses Bluetooth and Wi-Fi to cut road congestion

Stockholm transport authorities are gaining a better understanding of road traffic through technology

Stockholm authorities are using Bluetooth and Wi-Fi and sensor technology to give them a better insight into traffic trends to help them reduce congestion.

The Swedish capital is using BlipTrack queue and flow measurement technology from Denmark’s Blip Systems.

Drivers who have a Bluetooth or Wi-Fi connected device will automatically feed information into the system. The sensors detect Bluetooth and Wi-Fi devices, found in mobile phones and in-car audio and communication systems. This data helps the road authorities to plan better.

Bangkok, Zürich, Auckland and fellow Nordic city Copenhagen already use BlipTrack sensors to measure road use.

“We use the collected data to display live travel times via Trafiken.nu, which is our traffic information hub, and on several variable message signs placed around the city,” said Otto Astrand, traffic analyst at Trafik Stockholm. “The travel times help road users to make informed decisions about their journey, both in real time and for those planning their daily commute.”

Trafik Stockholm is one of four traffic management centres in Sweden and is a co-operation between the Swedish transport administration, the city of Stockholm and Nacka municipality.

“It also helps us to understand various traffic-related matters, such as the impact of traffic control, weather-related patterns, congestion patterns at roadworks, accidents and events, and driving behaviours and patterns,” said Astrand.

Johanna Karlsson, CEO of Trafik Stockholm, said: “The ability to detect and mitigate disruptive events offers significant economic benefits through reduced travel times and fuel consumption, as well as environmental benefits due to reduced carbon dioxide emissions and improved air quality.”

Stockholm has recently expanded the system to cover major roads north of the city. ............................................................................ .............................................................

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