Roland Perry wrote:
In message , at 22:46:49 on Thu, 21 Mar
2019, Recliner remarked:

As the Victoria line is entirely underground,

Apart from the depot at Northumberland Park.

Yes, we know — why do you think I worded my comment the way I did?

I have no idea. It was almost suggesting that efficient brakes were not
required in the depot in rainy weather.

Perhaps you could tell us how often they run trains full of passengers at
50 mph through the depot?