On Jun 26, 10:28 am, John B wrote:
On Jun 26, 10:17 am, Steve Fitzgerald ] wrote:

My TFL daily travel alert message says:

METROPOLITAN and PICCADILLY LINES: Between 2100 and 2140 on Monday to
Thursday evenings until early September, the Metropolitan line service is
suspended between Hillingdon and Uxbridge and the Piccadilly line is
suspended between Ruislip and Uxbridge. Customers are advised to use Bus
Route U2, which has been enhanced, between Hillingdon and Uxbridge.

Can anyone explain this please? 40 minutes of engineering work per day?

I know this one.

It's the amount or time required to put protection in place at Uxbridge
for the works on the station roof. Apparently once that is done, normal
services can then resume until end of traffic.

This might be a stupid question - but if the protection is such that
it allows normal services to happen while it's in place, why don't
they just leave it up 24/7?

--
John Band
john at johnband dot orgwww.johnband.org

Because the protection involves shutting off a platform, you would not
be able to handle the peak hour service, Met line every 6 minutes and
Piccadilly every 15 mins to Uxbridge (15 to Ruislip).