On Wed, 17 Feb 2016 16:33:55 +0000
Mike Bristow wrote:
I don't have a good grasp of the cost/benefit ratio of your proposed
scheme. I don't think you do, either. But feel free to prove me
wrong by estimating the cost of installing - and maintaing for a
decade, say - a set of points, and the benefit of doing so - again,
expressed in cost terms.

Feel free to tell me why the actual cost matters, rather than as a percentage
of the total cost of the ELLX.

Don't forget to include the cost of increased delays when the points
fail. Obviously, you'll know the MTBF for points - I'd be interested
in knowing what that is, as it happens, so can you share your
estimate for that, too?

I imagine the MTBF would be the same as other sets on that line. When was
the last time any of them failed and the line had to be closed because of it?

I'm quite happy to say there are things I don't know. TfL did spend
a lot of time removing reversing facilities on the tube - I think

Oh didn't they just. Every time there's a problem on the piccadilly line half
the damn line has to close. Genius.

--
Spud