The city of Aarhus, Denmark has deployed 10 dynamic digital signs that are driven by motorist’s Bluetooth equipment. The signs provide instructions that include driving times and the fastest routes, which saves time and helps traffic flow smoothly.

In Aarhus, as in other large cities facing substantial challenges with traffic congestion, yet another means has been adopted to attempt to smooth the traffic flow and provide motorists with faster journeys. Ten dynamic signs, provided by ITS Teknik, featuring information such as driving times, alternative routes and weather conditions have been placed along the city's busiest roads. The content of the signs is updated on an ongoing basis as the actual characteristics of the traffic flow change. The motorists themselves, by contemplating the routes and points in time when they drive them, contribute to improving the level of service and helping the traffic move faster.

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“The messages on the signs have been developed and adapted based on studies of commuters, and hence reflect information that the target group both demands and respects. The dynamic signs will be of benefit to the motorists, who will experience a higher level of service, and to the flow of traffic in general," says Claus Pedersen, Head of the Centre for City Use.

BlipTrack-Traffic-IllustrationMotorists provide traffic data
The traffic data on the new information signs is based upon real-time inputs from 125 sensors that are placed on selected roads in Aarhus. These sensors detect motorists driving with a Bluetooth device, such as in hands-free systems and mobile phones. When a vehicle with an activated Bluetooth device passes the sensors, its anonymous ID, also called a MAC address, is recorded, encrypted and time-stamped. The data is then sent to a server where it is filtered and analysed.

By combining the data collected by all sensors, an accurate picture about each road user, such as their travel times, dwell times and movement patterns are provided. The information of the monitoring system are used to inform and warn city traffic engineers about queues and delays, identify problem areas, evaluate and calibrate traffic signals, provide information on the capacity of existing roads, and detect changes in traffic patterns.

“With BlipTrack we are able to measure the capacity and traffic flow in real-time in and around the area. This allows us to take proactive steps to initiate countermeasures if traffic build-up should occur. It also helps us to understand various traffic-related matters, enabling us to evaluate and validate existing traffic models and make informed decisions about where to prioritise expansions and optimisations to help the daily commute.”

Otto Åstrand

Traffic Analyst at Trafik Stockholm

“It gives us insights on how individual journeys can differ from each other, especially when traffic lights are involved. The ability to measure travel times over long stretches of road, with various queue lengths, and only looking at specific route choices, is another strength of the BlipTrack solution.”

Johanna Karlsson

CEO of Trafik Stockholm

“BlipTrack helps Thai citizens to travel home faster during two major traffic events: Songkran and New Year holidays. The system allowed not only road users to decide route choices via travel time info online but also the Thai Highway Police to manage traffic in real-time.”

Dr. Songrit Chayanan

Director of Samut Sakhon Highway District.

“With BlipTrack, we can discover errors and irregularities that we would not have a chance to see otherwise. In addition, it is extremely educational and easily accessible to study how the incidents of various kinds influence the road network.”

Asbjørn Halskov-Sørensen

Project Manager at Aarhus Municipality

“The solution helps improve service levels for the municipality commuters. The real-time information allows drivers to make informed route choices that ultimately distribute traffic and increases the operational performance of the road network.”

Anders Kruse Christiansen

Project Manager at Aarhus Municipality

“Portsmouth has benefited from the accurate data from the BlipTrack installations with a much-improved understanding of journey times within the city of Portsmouth. We consider that the ease of extracting traffic data from BlipTrack is significant to see how time savings are achieved. Selecting the required route, date, time, etc. is very straightforward and simple to understand.”

Lee Gilbert

Traffic Engineer at Portsmouth City Council

“The solution has helped us get a better understanding of the dynamic traffic system and provides quantifiable data to support the improvement measures to traffic flows. It allows us to provide a world-class service to our customers and community by efficiently managing traffic flows in and out of the port.” Read more.

Timothy Godden

General Manager of Strategy and Risk Management at Port of Dover

“BlipTrack provides the Aalborg City Business Association with an in-depth understanding on how people move within the city and measures the economic impact of events. The data allow us to analyze, optimize and improve large-scale events”. Read more

Flemming Tingbak

Director of Aalborg City Business Association

BlipTrack provides our clients with an unparalleled range of traffic information. Using the same data, we can provide live travel times direct to signs and phones, identify incidents and delays through to understanding the strategic route choices, origin/destination and changing travel patterns. Read more

Richard Young

Associate at BECA

“BlipTrack give us a unique opportunity to deliver new logistics solutions for the benefit of our customers”. Read more

Mette Schmidt

Chief Technical Officer for the Port of Aalborg