SOUTHEASTERN The railways will adopt a reduced timetable next week to reduce the risk of accidents leaving the track.
The company said it was working with Network Rail to implement a short-term autumn schedule "between the 12th and 16th of November" during the worst autumn weather.
This means that some off-peak trains at some London train stations call less frequently.
A spokesman said that an estimated 4,000 to 6,000 passengers a day would be affected.
Ellie Burrows, head of Southeastern's train service, said: "Driving conditions can be particularly difficult for our train drivers at this time of the year, and just as we would not ask anyone to accelerate on the roads via Black Ice, the line remains at the same risk on the railway.
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"We can not risk the safety of the passengers if the trains drive at full speed in bad conditions."
She said the changes were made to ensure the safest and most reliable service.
Passengers are encouraged to check their journey on the Southeastern website or their mobile app, review National Rail inquiries, or tweet on @Se_railway or follow the hashtag #SEautumn.