A large steel structure spanning across one or more tracks to mount signals directly above the lines they govern. Gantries are typically used in complex interlockings or multitrack territories where standard trackside masts would be obscured or confusing to approaching crews. They ensure clear visibility of aspects for each specific lane of traffic.
Heard on the job
The maintainers are out on the signal gantry replacing a burnt bulb over track three.
Also heard as
- signal bridge