Edward Cowling London UK wrote:
After another grim morning on Friday, I wonder why the ventilation on
the Victoria Line is so bad ? If you change to the Piccadilly at
Finsbury Park it's like entering a different world. So if the Picc
Line can stay reasonably fresh why can't the Vic Line ? Even with
the trains at full hurtle little air seems to move about the carriage.

The Victoria Line is completely underground, except for the depot. The Picc
has several open air sections.