I think the real issue is not the railings or the lack of them, but the fact that you can't cross from the (old laundrette) to the station in one go. It's the wait in the middle that makes people do things that are not always safe, and they'll continue to do that whether the railings are there are not. In fact, without the railings its easier it hop back onto the island if you need to abort a between-lights manoeuvre.