Audio
System

Audio System consists of speakers set that are synchronized with TMCC. Its main task is to inform the passengers about eventual incidents in the tunnel and provide audio instructions about evacuation direction.
The speakers are installed alongside in the tunnel and have one-way communication

ELEMENT SCHEME

  • 1. TMCC - Audio command
  • 2. One-way communication
  • 3. Amplifier inside of SOS niche
  • 4. Speaker