Tunnels are important infrastructure elements in road networks that facilitate connections between regions. The environmental conditions prevailing therein are influenced by smoke, fog, dust and exhaust gases and should be monitored so as not to expose people to dangers and impairments as they pass through. Fires in particular have had dramatic consequences in the past. At all times, people in the tunnel must be supplied with sufficient breathing air and suitable visibility conditions must be ensured.

Since 1990, JES Elektrotechnik GmbH has been developing, installing and maintaining systems for monitoring air quality and lighting conditions in tunnels. Our systems are robust, durable and resistant to the corrosive tunnel atmosphere and work reliably and precisely. They comply with the requirements of Directive 2004/54/EC (minimum safety requirements for tunnels in the trans European road network) and the more precise national directives and regulations:

• Austria: RVS 09.02 Tunnel Equipment
• Germany: RABT guidelines for the equipment and operation of road tunnels
• Switzerland: FEDRO Guidelines and Technical Manual of Operating and Safety Equipment (BSA)

Our product range in the field of tunnel safety includes systems for measuring:

• Toxic gases such as CO, NO, NO₂, etc. (extractive or in-situ)
• Visual opacity (extractive or in-situ)
• Airvelocity,direction and temperature
• Luminance (approach path, in-sight section, transition section, inner section)
• Illuminance