Four objects illustrating various professions on the railway were made interactive with electronics. The "brakes operator" feels the breeze of a (imaginary) moving train and hears the crunching brakes as soon as he or she tightens the wheel. The "fireman" hears the engine hiss and sees it spout smoke between the wheels. The "maintenance engineer" is surrounded by the well-known sounds from a metal workshop and the the flashes of a welding machine. The "driver" hears himself announce the next stop.
Loc No 13: the sensor, audio equipment and fog machine are, by intent, difficult to spot