At a glance
Let the innovation leader help you ensure tunnel safety
Added safety – fewer backups: These are the key requirements of traffic service providers. As the density of the traffic on our roads increases, the future is all about finding ways to increase the availability of tunnels while at the same time improving safety for road and tunnel users. For 60 years, SICK has been helping road and tunnel operators to take on this challenge, offering innovative products not only for measuring visibility and air quality in routine operation, but also for air flow measurement and smoke detection in emergency situations. Intelligent traffic sensors are absolutely fundamental to ensuring state-of-the-art traffic guidance technology.
Tunnel monitoring

Safe driving in tunnels – from start to finish
The portfolio of tunnel sensors from SICK is designed for urban tunnels, overland tunnels, and tunnels in rail and subway systems. Whether it be routine operation or emergency situations, SICK is your one-stop-shop for virtually all tunnel monitoring applications.
Measurements inside the tunnel

Measurement of CO, NO, NO2 and visibility for ventilation control. By capturing exact measured values, monitoring the atmosphere inside the tunnel provides the basis for effective ventilation control.
Product recommendation: VISIC100SF, VICOTEC410, VICOTEC320

Smoke detection for early fire detection. In the event of a fire inside a tunnel, every second counts: As fires manifest themselves in the form of smoke much earlier than heat, smoke detectors are able to detect fires in the very early stages of their development.
Product recommendation: VISIC50SF

Monitoring of the air speed and direction for ventilation. The speed and direction of the air flow inside the tunnel have to be measured to control ventilation. In the event of an emergency, this is the most important measurement to enable the fans to be controlled.
Product recommendation: FLOWSIC200, VM400
Measurements before entering the tunnel

Detection of overheight vehicles. To protect the infrastructure, vehicles that are too high must be reliably detected and removed from the flow of traffic even before they enter the tunnel.
Product recommendation: HISIC450

Monitoring visual range to avoid accidents. To avoid accidents in fog, a maximum speed limit is set based on the measured visual range and indicated on variable-message signs.
Product recommendation: VISIC620

Avoiding fires. The VHD system detects overheated vehicles. This enables them to be stopped before they enter the tunnel.
Product recommendation: VHD
Condition monitoring

For tunnel sensors
The Monitoring Box from SICK provides an effective solution for monitoring and maintaining devices and sensors in tunnels. Device and sensor states can be monitored in real time, and undesired operational states predicted ahead of time. If required, every significant change to the device states is visualized concisely and clearly in a browser-based dashboard, thereby enabling the operating staff to intervene in a timely manner. This ensures the availability of critical device components.
Your benefits

By continuously monitoring the device state, it is possible to plan the maintenance deployments much more efficiently, e.g. grouping maintenance tasks. State-dependent maintenance also eliminates unnecessary servicing. The fault causes are known before an on-site service deployment needs to be carried out.

Changes in the tunnel devices during a particular time period can be monitored and informative prognoses made. By processing and analyzing historical data, it is possible to predict the device state and the required maintenance tasks.

The states of the devices before and after interventions are documented, thereby making it easier to prove or document compliance with standards or requirements.

Different maintenance tasks can be grouped depending on the status. You know which servicing tasks are required for which devices before you get to the device in the tunnel.

With the Monitoring Box from SICK, you can take timely action before a device failure occurs. This significantly increases the availability of the devices in the tunnel.

You always operate your devices in the optimal performance range.