EN 50155 is a European standard specifying the technical and environmental requirements for onboard electronic equipment used in rail vehicles like trains, trams and subways. It covers key aspects of reliability and safety in the harsh conditions typical of railway applications.
The standard defines allowable operating and storage temperature ranges (e.g. from –40°C to +85°C), resistance to vibration, shock, electromagnetic interference (EMC), humidity, power supply instability (voltage fluctuations, outages), and requirements for component lifecycle and maintainability.
The goal of EN 50155 is to unify quality and safety standards for electronic systems in rail transport – such as HMI panels, passenger information systems, controllers, data loggers and onboard computers. Devices that meet this standard must demonstrate mechanical durability, stable performance over time and reliable operation under varying environmental conditions.
