Ranging from airports and seaports, to train stations and mass rapid transport systems (MRT), to buses and coaches and their stations and to maintenance facilities, the key objective for operators in the transport industry is safety for passengers and goods. MRT takes place largely underground. Stations, as well as tubes, are confined spaces with limited escape capabilities. In case of a fire incident, thousands of travellers will be trapped, hard to reach and are likely to panic. An Early Warning Fire Detection System, supporting multiple alarm thresholds, each one linked to a tested and maintained response scenario performed by regularly trained intervention forces, will help the underground operator to keep control. Professionally planned and implemented, an Early Warning Fire Detection System will avoid fatalities, reduce loss and speed up recovery. It also contributes to a positive image of the MRT, thus improving its acceptance and usage