Lionel 6-22931 Cantilever Signal Bridge
This Lionel model is a nicely detailed and painted cantilever style signal bridge. The signal bridge is constructed of cast metal parts.
However the targets only display red and green signals. The signal operates from 12 to 18 volts. The wiring requires a common black (B), green (G) and red (R) connections from a Lionel 153 contactor or an external relay (green normally closed and red normally open).
The signal head is arranged with green lamps above red.
The Lionel Signal Bridge instruction manual is attached.