What is the purpose of the white lamps fitted to the rear of signals?
Signals that face away from the signal cabin are provided with back lights to enable the signal operator to see the aspect of the signal. Normally a single white lamp is lit when the signal is on, and no lamp is lit otherwise. For stop signals that can show the Attention indication, two white lamps are visible in the on aspect and no lamps otherwise (distant signals that can show Attention have only a single back light).
Related Questions
- What is the purpose of the white triangular-shaped device that sits between the solid core carbon dioxide scrubbers in the BioPak 240R?
- What is the purpose of the ancillary cooling fan that is mounted in the rear of the computer case?
- What is the purpose of the white lamps fitted to the rear of signals?
