Commuters who use Southern Rail will be petitioning the Transport Secretary, Chris Grayling to demand his intervention to bring the strike to an end.
The Association of British Commuters is also asking for a fully independent public inquiry into the 'collapse of Southern Rail'.
The group said it will march to the Department of Transport on Thursday with an open letter to Mr Grayling.
REPORT: Southern trains ground to a halt for the third day this week as angry passengers staged a protest at Victoria station
Talks aimed at resolving the Southern Railway drivers' dispute are being held at the conciliation service Acas.
Frustrated passengers share their stories as the worst train strike for 20 years hits home.