Signal lamp

Flags and lanterns were the main means of communication between level crossing personnel, station and trains on the national railway. They transmit, according to a colour code, orders that must be immediately followed when running trains or executing shunting moves. Signal lanterns replaced flags at night. They were also used in emergency situations, to complete or confirm the indications transmitted by the fixed signals present on the line. They can emit a yellow, green or red light, alternating the coloured glasses in front of the light source, placed on the central rotating body of the lantern. Activated by a lamp inside, the intensity and light should allow the driver to see it from a distance. They were also referred to as a hand-held lantern.