- Signal and Track Switch Repairers
- Rail Signal Mechanic
- Signal Mechanic
- Signal and Communications Maintainer
- Inspect and test operation, mechanical parts, and circuitry of gate crossings, signals, and signal equipment such as interlocks and hotbox detectors.
- Inspect switch-controlling mechanisms on trolley wires and in track beds, using hand tools and test equipment.
- Lubricate moving parts on gate-crossing mechanisms and swinging signals.
- Inspect mechanical equipment to locate damage, defects, or wear.
- Repair worn, damaged, or defective mechanical parts.
- Replace worn, damaged, or defective mechanical parts.
- Test mechanical equipment to ensure proper functioning.