And I would suggest that is very bad advice!!
It might be entertaining but it is no way to think you are going to learn anything about being a signaller.
I don’t agree with this.
SimSig is pretty realistic when it comes to working VDU-based locations - indeed a slightly different version of it is or has been used for signaller training. It also gives a flavour of the pressure signallers can be under in busier locations.
Yes there’s elements missing especially things like comms, line blocks, engineering work and the like, but on the whole it’s not a bad representation of real life at all.
It won’t replace training, but it certainly can help someone develop the right mindset, and give the opportunity to see things and try things in a consequence-free environment.
I’d say give it a go, but treat is as no more than useful entertainment.
Some of the sims are also very good practice for control-type roles. For a decent experience try something like Merseyrail on full ARS with failures / delays turned on, and focus on making the interventions necessary to keep the service going and getting it back on time. Some knowledge of how crewing works makes this even more realistic as one can plan interventions based on how driver diagrams work. 20 hours of this with constant failures and you’re guaranteed to go to sleep with numbers and times spinning round in the head - just like the real thing!