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Sensor installation

Grenoble rocade sud (A41), direction west, on-ramp preceding exit 27
April 23, 2013, 10 PM

Marking of the spot to be dug in the center of the on-ramp

Excavating the hole in the asphalt with an electric drill

Crushing the stones below the asphalt layer with a jackhammer

The sensor is positioned in the hole (a 2 € coin is shown as a comparison)

The sensor is completely immersed in a solidifying resin (with the arrow pointing in the traffic direction)

Courtesy of DIR-CE and Karrus SAS