signal box
US /ˈsɪɡ.nəl ˌbɑːks/
UK /ˈsɪɡ.nəl ˌbɑːks/

1.
kotak isyarat, rumah isyarat
a building beside a railway line from which signals and points are operated
:
•
The train driver saw the green light from the signal box.
Pemandu kereta api melihat lampu hijau dari kotak isyarat.
•
The old signal box is now a museum.
Kotak isyarat lama itu kini menjadi muzium.