Southern Rail says services will run normally today in spite of staff strikes.
Members of the RMT union have begun a three-day strike as part of a dispute over driver-only trains.
Southern services were disrupted yesterday by a separate RMT strike over the role of conductors.
Southern Rail and train drivers' union Aslef will today begin talks aimed at resolving a dispute over driver-only trains.
Aslef has suspended plans for a three-day strike next week while talks go ahead.
Conductors in the RMT union are due to strike on Monday - but have asked to join today's talks.
Southern Rail drivers are striking for the third day this week.
Passengers will again face disruptions to their journeys as members of the Aslef union take action against driver-only trains.
Another three-day walkout is planned for later in the month.
Southern Rail passengers should expect more disruption to their journeys today - in spite of drivers returning to work.
Members of the Aslef union have been on strike for 48 hours in protest against driver-only trains.
Southern's owners Govia Thameslink yesterday announced plans to take the union to the Supreme Court.
Commuters will have their journeys disrupted again today as Southern Rail drivers continue to strike.
Hundreds of thousands of passengers were affected yesterday, with another walkout planned for Friday.
The action is part of a dispute over driver-only trains.
Southern Rail are advising passengers to avoid travelling today as drivers begin more strike action.
Trains will be cancelled today, tomorrow and Friday - with severe disruption also expected on Thursday.
The strike is part of an ongoing dispute over Southern's proposals to increase its use of driver-only trains.
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