also: しんごうしょ
signal station
A facility or building from which signals (especially railway signals) are controlled.
There are several small signal stations on this line.
The signal station staff switched the train's route.
Standard kanji spelling. The reading しんごうじょ is the most common.
Alternate reading しんごうしょ is less common but attested.
Compound of 信号 (signal) and 所 (place, station).