The Považský Chlmec Tunnel D3 Motorway between Žilina (Strážov) and Žilina (Brodno) - operating since... The Bôrik tunnel PPA CONTROLL, a.s. implemented a complete technological part of the... The Branisko tunnel PPA CONTROLL, a.s. implemented the following activities in the construction... The Horelica tunnel PPA CONROLL, Inc. implemented complete technological part of the Horelica... Tunnel control simulator Simulator for tunnel equipment and central control system Simulation of incidents...