The world’s safest metro
The starting point for the planning of the west metro has been to ensure the safety of passengers in all situations. The station platform areas are spacious and coherent, and special attention has been paid to lighting. Long underground passages and fringe areas are avoided in the public spaces of the metro stations. Special attention has been paid to worksite safety, which is world class in this project. Read more about safety on West Metro worksites.
When planning the metro, special attention was paid to emergency response operations. Train operation is monitored with surveillance cameras throughout the tunnel. In addition, all trains are equipped with surveillance cameras. The metro’s control centre monitors the operation of the trains in real time, and in the event of an emergency, the surveillance cameras will help to handle the situation efficiently and safely.
If there is an emergency in the tunnel, the basic principle is that the train will be driven to the nearest station. If that is not possible, passengers will be guided to safety by following the instructions announced over the PA system. The most important place for announcements is in the train, where the instructions can best reach the passengers.
The tunnel is safe
The tunnels that have been excavated in the bedrock are both economical and safe. The underground network of the West Metro’s tunnels consists of two parallel tunnels with fire compartments. The width of a tunnel is six metres. The metro tunnels are excavated at a depth and location that are favourable from a geotechnical perspective. The distance between the tunnels varies between 13–17 metres. At turnaround tracks, the distance may be at maximum 50 metres.
In an emergency, passengers may exit the tunnel and enter the neighbouring tunnel through smoke traps in the connection tunnels. The distance between the connection tunnels is about 150–170 metres. Exit shafts are located approximately every 600 metres. There is a pedestrian walkway in the tunnel, and the tunnel is equipped with signal and safety lights. There are also signposts every 25 metres.
The tunnel network is equipped with a fire detection system. In addition, the metro is equipped with a video surveillance system, and the trains have a PA system for emergencies. All critical functions in the metro are designed as fail-safe. This means that the passage of a train requires undisturbed functioning of the system; otherwise, the train will be stopped and the situation cleared.