Dorman and VMS Signals

[minty625]

Anyone know why Dorman is usually preferred for new projects over VMS signals? What are the advantages and disadvantages of both types of LED? I would greatly appreciate any help

 

[Tomnick]

I don't know the answer, sorry, but I find it a pleasing thought. As a driver, I find VMS signals absolutely awful to work to at night. Far, far too bright.

 

[Annetts key]

In my former area, the only new main aspect and GPL LED signals were Dorman type. Hence I presume that the infrastructure owner (Network Rail RAM) had made the final decision.

 

[Belperpete]

Anyone know why Dorman is usually preferred for new projects over VMS signals?

Are they? Everywhere I go, it seems to be VMS going in. I suspect that it depends on the contractor. Siemens schemes seem to use VMS.

I think that Dorman produce a signal that is compatible with the old SL35 filament signals, which allows the filament signals to be replaced with LED without changing the circuits.