Tony

The RER DD stock does not compare. The vestibule and the stairs take up more than half of each vehicle. The stairways are narrow and they are probably amongst the worst DD stock built and you may as well be in a sheep wagon.

I for one do not like going sideways as I like to look out of windows and am not wired for sound. End result is a crick neck. They might be alright for the London tube but not much else.

Bob T

> On 22 Mar 2019, at 09:11, Prescott lenkaprescott@...> wrote:

>

> I've no doubt that better performance can be wrung out of the double decks but the fact is that no high capacity mass transit railway in the world uses them for good reason. Even the much discussed RER Line A in Paris struggles to throughput more than 25 trains and hour and that's with automated driving, the attendant concentrating on the doors/dwells and three doors per side per car. The Sydney double decks also won't fill properly because of their lack of doors and unwillingness of people to move away from the doors because they don't want to get trapped inside when they want to get out. Human nature defies theory!

>

> Tony P

>

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