A SAGE Group Company

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Tunnel solutions and SAGE

SAGE delivers a complete smart transport solution for the most complex tunnel projects, from initial design through to tunnel maintenance and ongoing support.

We bring comprehensive experience managing critical technologies that improve your tunnel's operation and lifespan

Giving careful consideration to whole-of-life costs, we work with you to find innovative solutions that improve visibility for your network and keep traffic flowing. 

The Cross Yarra Partnership tunnel Metro Melbourne.
Hills M2 tunnel hi vis man

Your tunnel system integration partner

SAGE delivers certainty for complex transport systems across road and rail for tunnel and bridge fields. Many of the nation's leading civil contractors and toll road operators are among our valued clients. 
As a system integrator, we design and implement tunnel control systems from all major vendor platforms. We deliver tunnel control systems and Intelligent Transport System (ITS) networks, including design, engineering, manufacture, testing and maintenance.
Our extensive knowledge ensures best practices that improve the operation and maintenance of your tunnel.

SAGE Tunnel Solutions


  • Asset management plans
  • AS 61508 safety system design and operational compliance
  • Automatic incident detection - VIDS and TIDS systems
  • Cyber
  • CCTV
  • End-to-end quality-assured project management and design verification
  • End-user or operator training
  • FMECA analysis
  • Niche cabinet manufacture
  • Optimising asset performance
  • Operations Management Control Systems (OMCS) upgrades and replacements
  • Predictive analytics
  • Plant Management Control Systems (PMCS) upgrades and replacement
  • Radio Rebroadcast systems
  • System Integration
  • Tunnel fire life safety systems
  • 24/7 service, support and maintenance

Tunnel controls and safety systems

SAGE designs, installs, integrates and delivers the systems that are essential for safe, reliable, and maintainable tunnel systems.

We bring more than 25 years of experience managing critical technologies that improve the operation and lifespan of tunnel control systems, including the ability to protect equipment and increase asset uptime.


SAGE's differentiation is how we deliver

  • Access monitoring
  • Air quality
  • Control and switchboard panel manufacture
  • Deluge control
  • Fan vibration monitoring and electrical monitoring
  • Fire suppression systems
  • High-level communication
  • HVAC 
  • ITS engineering

  • LED lighting control systems
  • Linear heat detection
  • Main fire panels
  • Power Management Control System across multiple vendor platforms
  • Power management via power distribution and monitoring system
  • Redundant networking
  • Strong PLC and SCADA engineering capability Australia-wide
  • Tunnel Operations Management Controls System (OMCS)
  • Video incident detection 
Smart tunnel solutions that improve commuter experience.

More to explore


O-Bahn tunnel systems

SAGE delivered the essential tunnel systems required for the O-Bahn, including fire-life safety, ventilation, deluge pumping, and power monitoring systems designed to reduce whole-of-life costs.

The O-Bahn city access project involved the latest C-ITS innovations, incorporating bus collision avoidance, unauthorised vehicle detection, priority signalling and real-time travel data collection.




Cross Yarra Partnership

SAGE is the tunnel and building management control system designer and integrator for the Melbourne Metro Tunnel Project. 

SAGE’s responsibilities include the design and delivery of automated control systems for this major railway project.

The Metro Tunnel Project is the largest public transport infrastructure project ever undertaken in Victoria, delivering twin 9km rail tunnels under Melbourne and five new underground stations.



Predictive maintenance for tunnel jet fans

The twin Heysen Tunnels have adopted an innovative solution that leads the way in predictive maintenance.

The system detects wear and tear through sensors installed at 12 points on each fan that monitor the status of the fans and mounting brackets, via vibration trends.

SAGE Automation configured the SCADA and PLC components of the fan vibration monitoring system.


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