Management of tunnel single/bidirectionality (narrow 2.60 m lanes) according to the type of traffic, recorded at 8 data collection points at 5 km, 300 m, 30 m and 20 m inside the tunnel on both sides, in Spain and France. Our traffic counting uses piezo-loop-piezo sensors to collect data (number of axles, distance between axles and loop profile to detect large vehicles) in any environmental condition and we perform pass controls in 7 areas inside the tunnel to determine the position of any stationary vehicles before restarting bidirectional traffic.
The data obtained are used to manage ventilation, traffic signalling, indicator panels, etc., which have been in continuous operation since 2012, for optimum traffic counting.
Cotefablo tunnel on the N-260 in the Huesca Pyrenees. 690 metres long with 2.5-m wide lanes, at an altitude of 1420 metres. Includes traffic signal management. Also installed in the FEVE tunnel in Corrales (Cantabria).