- History
- R&D
- Manufacturing
- Partnerships
- Environmental policies
- Success stories
- Cost effective mining network
- Mining PoE Ethernet network
- ABB Stressometer System
- Ethernet switches in action
- Amsterdam gas and energy distribution
- Oilfield automation with MRD-310
- ERTMS level 2
- Railway control system
- Improved railway safety for man and animal
- Great Belt Bridge Emergency IP Telephone System
- Highway tunnel emergency system
- Traffic Warning System Saves Lives
- Gässlösa water and waste water system
- Monitoring pumping stations with the MRD 3G router
- Remote pumping stations and GPRS
- Careers
Highway tunnel emergency system
The A14 highway links the Paris business district of La Défense with Orgeval. The highway is mainly underground and the total tunnel length is more than 13 km. Technical supplier SDEL was selected to provide the tunnels with an emergency system. There are eight tunnels in total, and at each tunnel entrance SDEL designed a message sign and road barrier system to stop the traffic in case of an emergency.
A central redundant fibre network built with Lynx switches provides a backbone for a number of Wolverine SHDSL sub-networks that control the message signs. The backbone network and the sub-networks all use the Westermo FRNT redundancy protocol. This design delivers a redundant system that provides high availability, reliability, and safety which were the major factors in the customers decision to use the Westermo Lynx and Wolverine.
