road tunnel lighting

Automobile tunnels are a place of increased danger, since any minor accident can lead to serious consequences. Many motorists feel discomfort when driving in long tunnels, which are an integral part of the road infrastructure of developed cities and mountainous regions.

features of the lighting system

When entering a tunnel during the day, a process of visual re-adaptation to lower light levels occurs. To do this, at the entrance and exit of the tunnels, it is necessary to overestimate the illumination and brightness of the road surface and gradually reduce them along the length of the tunnel. The normalized lighting parameters of the lighting installation depend on the length of the tunnel, speed limit and curvature.

It is also important to ensure normal visibility of the entrance portal to the tunnel, taking into account the driver's adaptation conditions. In addition to working lighting in tunnels, an emergency lighting system must be provided.

general recommendations for choosing equipment

Tunnel lighting needs to be extremely reliable. They must be resistant to mechanical damage and withstand washing with a jet of water under pressure. The body of the luminaire must be suitable for disinfection. The service life of luminaires must be at least 50,000 hours. Appropriate requirements apply to lamps and emergency lighting.