Abstract: A system for preventing and/or extinguishing a fire in an enclosed target area in a vehicle. The system having a central compressed air source for supplying compressed air to a load circuit. A supply of compressed air is provided in a compressed air buffer tank is supplied to a gas separation device from the compressed air buffer tank. A nitrogen-enriched gas mixture is provided at an outlet of the gas separation device, and introduced into the target area. An inlet of the compressed air buffer tank is at least temporarily fluidically connected to an outlet of a central compressed air source, wherein compressed air can be supplied to the compressed air buffer tank. A fluidic connection is provided between the central compressed air source and the compressed air buffer tank if a load circuit is not drawing any compressed air from the central compressed air source.