This part specifies fire safety requirements for railway vehicle design to cover the objectives defined in prEN 45545-1. The measures and requirements specified in this part of the document aim to protect passengers and staff in railway vehicles in the event of a fire on board by minimizing the risk of a fire starting, delaying the fire development and controlling the spread of fire products through the vehicle, thus aiding evacuation. It is not within the scope of this standard to describe measures which ensure the preservation of the vehicles in the event of a fire. This part is valid for railway vehicles defined in prEN 45545-1.