PPA CONROLL, Inc. implemented complete technological part of the Horelica tunnel – 600 m as the general contractor for VÁHOSTAV-SK, Inc.

Commissioning in 11/2004

• Power supply of the tunnel (22 KV substation, LV switchboard – power supply of technological equipment, UPS and diesel generator)

• Lighting of the main tunnel and the escape tunnel, fire and emergency lighting

• Supply of the central control system

• Measurement of physical quantities – opacity, CO, air flow, differential pressure, temperature

• Drive-simulator for operators with a simulation of incidents

Security system (SOS boxes, closed TV circuit + transmission of images to the police and the Fire and Rescue Corps)

• Electric fire signalling system

• Wireless connection in the tunnel

• Ventilation of the main tunnel tube and the escape tunnel

• Traffic control (variable message signs and traffic lights)