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Transportation and mobility

Florence Polge-Cohen - 30/11/2016

Grenoble's "rocade sud" : and if you could visualise the traffic situation before you took to the road?

Since 28 November, the users of Grenoble’s “rocade sud” can, in real time, visualise the traffic situation and its evolution prior to getting into their vehicle.

Developed by Necs, a joint team between Inria and the Gipsa Lab laboratory, the Grenoble Traffic Lab platform (GTL) aims to study, in real conditions, complex large-scale systems such as the road circulation of an urban agglomeration.

Using 120 wireless electromagnetic sensors located along the 12km of the "rocade sud", in an east-west direction, real data from the motorway traffic flows is integrated within the GTL platform. The demo developed as part of this framework ( is now available to the general public. It provides a visual representation of traffic density and a real-time prediction of journey times within the next 30 minutes.
The GTL platform thereby enables those using the "rocade sud" to optimise their travel. As far as a non-commercial use is concerned, it also provides the opportunity for an informed public to study, in finer detail, the data collected (visualisation of the condition of the sensors, annual traffic history...etc).

The GTL platform - a research and experimentation tool - enables researchers from the Necs team to establish and verify predictive mathematical traffic models for the "rocade sud". 
As part of the ERC Scale-FreeBack project, their aim will also be to integrate their findings within a more global system enabling the real-time observation of the traffic situation but also the optimisation of the Grenoble traffic control and management system.

Keywords: Traffic prediction - Traffic regulation - GTL