Lamp proving

[dorothy.pipet]

Is it required to lamp proving a GPL signal (Independent Shunt) if it is not having any signalled moments up to that signal?
Is it required to lamp prove route indicator for GPL?

To UK practice:
Not required
Not normally

To expand slightly (again current UK practice):
There are some cases where it is required to prove a GPL such as where it is a LOS, but otherwise it is not a requirement - the case of having no signalled moves up to it is a good example. Never the less I would expect a full re-signalling scheme to provide lamp proving on all signals.

For route indicators associated with GPLs - no indication is required if the routes are all similar and none lead to a Limit of shunt or other hazard. If a Route Indication is provided, it must be proved for routes to a limit of shunt, but proving is not required where there is only one route or the routes are all similar and do not lead to a significant hazard.