Fibre optics for tunnel

Fibre Optic for tunnel

At Saint Martin de la Porte and La Praz we install Fibre Optic for tunnel. Where Bioaccez deploys a Fibre Optic line to join the data line systems of two tunnels, LPZ and SMP4. From Chantier Operatif No.6 to No.7. At the station we acquire Location tag signals, voice and data signals, then multiplexed, we conver into optical signals. Then Optical fibre distributes signals down to other stations. Finally, we covert back into Location tag signals, voice, and data, ready to use. Fibre optic sensors have evolved significantly in recent years. This technology
warning system for tunnels


Bioaccez has built the warning system on Tingstad tunnel. It is used for self-evacuation. Tingstads is a motorway tunnel under the Göta älv. The tunnel connects Hisingen with main Gothenburg. The tunnel consists in two immersed tubes with three lanes in each tube. It is part of the E6 route linking Norway with Sweden. The tunnel has been opened to traffic since 1968. 125,000 vehicles are circulating each day consequently needs a strong renovation. SICE Nordics AB will install the tunnel warning system that certainly shall guarantee the safety at work.


The VOCAL ALARM SIGNALLING system has been completely installed at SMP4 at Lyon-Turin line. Now all the critical points in tunnels and chambers are equipped with the alarm boxes of Bioaccez and integrated in Transeo’s Software, so in case of emergency a vocal, sound, and light alarm in centralized mode can repeat the emergency signal in case of fire or evacuation.  
Modane Tunnel Emergency intercom

Modane Tunnel Emergency intercom

Bioaccez installs the Modane Tunnel Emergency intercom system. The site is a 4 km tunnel of “Descenderie de Modane“. Located at Puits d’Avrieux in France. IP 66 is the category of the robust intercoms and telephones, certainly well adapted for the humidity of tunnels. In case of emergency anyone can call the external guards. Also can call the 112 public emergency number. Every point is located every 250 along the tunnel.
Personnel Location at Lonato Tunnel

Personnel Location at Lonato Tunnel

Bioaccez Controls has started installing the personnel location system at Galleria di Lonato in Italy, besides the Garda lake. It is a bi-tunnel from the high-speed train. The  project is in the Brescia to Verona line. Seli Overseas SpA executes the works. It comprises RFID tags for personnel as well as vehicles & counters. Also Location beacons at sensitive points. The web based Software is the Transeo-Plus suite. The Personnel Location at Lonato Tunnel works at 2,4 GHz with directive antennas.

FRASSO to TELESE access control and personnel location

Bioaccez obtains the order for the access control and software of the stretch Frasso to Telese in the Benevento province in Italy (part of the High speed line Naples to Bari). The construction works are done by Pizzarotti, Ghella, Itinera, Salcef, Eds Infrastructure, Geodata Engineering, Integra and Rina Consulting. In 2026, at the conclusion of the works, it will be possible to go from Bari to Naples in 2 hours and up to Rome in 3 hours, facilitating travel between the three metropolises. Progressive travel time reductions are however expected already before that