The two-day strike by Southern Rail staff is under way as a row over changes to the role of guards and conductors continues.
Dozens of routes are affected in London by the walkout which started at 12.01am on Wednesday (September 7) until 11.59pm on Thursday (September 8).
But in an unexpected twist, the dispute which has and will affect thousands of commuters getting to and from work has seen some passengers take to Twitter to speak of an 'improved' service during the industrial action.
Some passengers have said the service has been better than on a normal day, with one describing their journey as "awesome".
This passenger thinks four out of 10 ain't bad
And this lady suggests whatever emergency measures are in place at the moment can stay for good
Bob thinks every day should be a strike day
Isn't this precisely the opposite of what should be happening?
However, other people have stressed the need for both sides to go back to the drawing table and reach an agreement
'We share frustration of passengers'
The bitter dispute between rail union RMT and Southern operator Govia-Thameslink Railway (GTR) is over possible job losses of guards and safety on 'driver-only operated' trains.
The controversial changes would see train drivers monitor train doors being opened and closed, using CCTV, instead of guards and conductors.
On the first day of industrial action rail union RMT has said there has been 'solid' support to keep the guards on the trains in its battle for safety on the rail network.
Disability campaigners joined the picket lines this morning to add fuel to the fight with RMT bosses saying “axing staff from Southern services will deny members of the public their legal right to travel under the Equality Act.”
RMT General Secretary Mick Cash said: “RMT's fight is with the company and the Government who have dragged this franchise into total meltdown.
“We share the anger and frustration of passengers and we cannot sit back while jobs and safety are compromised on these dangerously overcrowded trains."
The previous five-day strike last month was suspendedhalf way through as both sides agreed to return to the table to talk.