Fire appliances used by the fire service in the United Kingdom fit into several distinct categories and perform several generalised and specialised roles.Modern day fire appliances are technologically advanced machines capable of carrying a multitude of equipment and fire fighting media to deal with different types of emergencies ranging from Firefighting, Rescues, Human Extrication, Fire Salvage, Casualty and Trauma Care.The design and size of a fire appliance depends very much upon the role it is expected to perform. In general, most fire and rescue services utilise a standardized range of vehicles and equipment. However, Airport Rescue and Firefighting Services use much larger and heavier fire appliances than those deployed by public fire and rescue services.