Daz28
Member
The difference between New Street and Marylebone is quite obvious, New Street has I believe 14 platforms and Marylebone has 6. The line speed into New Street is 10mph and the line speed into Marylebone is technically 25mph although trains will be doing 15mph into the platform.
Safety is always a relative measure and not an absolute.
Sure, your suggestion would remove the small risk of a crowded platform and people falling onto the line in front of the train. But it introduces the additional risk of people being crushed as a whole train full of passengers head for the barriers.
Charing Cross is a six platform terminus, just like Marylebone, but nearly three times busier. The standard turnaround time is just six minutes and any delay will erode this further. The main difference is that trains are never stacked in platforms at Charing Cross, it is strictly one in, one out. It is absolutely normal for trains to be announced before they have arrived, and it is usual for there to be a crowd two or three deep waiting to get on as passengers are disembarking. Apart from the usual problem of rude people not letting everyone off before climbing on board, I haven't observed any safety issues. There don't appear to be a long list of RAIB reports where overcrowding has caused accidents. Have RAIB ever recommended trains not be announced before they have arrived?
Life is one big set of risks. We need to keep perspective and not relentlessly try and eliminate every single one, otherwise we all end up paying the price.