THE SIGNAL BOX

OVERSEAS

COMBINED STOP AND DISTANT SIGNALS
Italian Railways

by John Hinson

Italian mechanical signalling, at a glance, looks very similar to British practice, with red stop arms (with a white band) and arms signals arranged on bracket signals with posts at varying height for junctions.

Where it was necessary to provide a stop and distant arm on the same post, a very unusual arrangement was adopted, thought to be unique to this country. The two signal arms were placed one in front of the other. The appropriate night indication was obtained by colouring the spectacle glasses in such a way that the combination of them achieved the right result.

STOP HOME OFF, DISTANT ON HOME AND DISTANT OFF
Stop indication Home signal off, distant signal on Home and distant signals off
Both arms are horizontal, completely concealing the Distant arm. Home arm lowered to angle of 60º, exposing horizontal distant arm. Home arm lowered to angle of 60º, distant arm lowered to 45º.
Light shines through yellow lens of distant arm, and red lens of stop arm - shows a RED light. Light shines through yellow lens of distant arm, and empty lens of stop arm - shows a YELLOW light. Light shines through green lens of distant arm, and empty lens of stop arm - shows a GREEN light.

A few signals of this type can still (2002) be found in Italy but it is believed that none of those remaining have working distant arms, thus showing only two of the indications described above.

Additional notes by Jean Thouvenin



Comments about this article should be addressed to John Hinson