July 19, 2022 9:48 am
Are trains running today?
Where the UK heatwave has caused train cancellations and rail disruption
Trains will be running slower due to the risk of rails buckling in the heat.
Rail passengers in England and Wales have been told to travel only if absolutely necessary today, as the mercury is expected to rise above 40C.
The Met Office’s first-ever red weather warning for extreme heat remains in place, covering large parts of north, central and south-east England.
Network Rail has warned of cancellations at short notice and extended journey times due to speed restrictions, as it urged the public to avoid unnecessary journeys.
Here’s what you need to know.
Where are there cancellations?
Network Rail’s advice to only travel if necessary remains in place today, while vulnerable passengers and those with health conditions should avoid travelling altogether.
Train operators are telling passengers not to travel north out of London, further into the weather warning red zone.
With no services planned to run into or out of London Kings Cross all day, there are also now no Thameslink or Great Northern services planned to run north of London all day with East Midlands Railway only running very limited services between Derby, Nottingham, Luton, Bedford and London, which will stop altogether during the hottest part of the day (lunch time to 7pm).
There will also be very limited and disrupted services running into and out of London Euston (Avanti West Coast and West Midlands Railway) and London Marylebone (Chilterns Railway).
In London, there are delays on the Central, District, Elizabeth, Jubilee and Piccadilly lines due to heat-related speed restrictions. The Overground and Metropolitan lines are both part-suspended and delayed due to speed restrictions. There is no service on the Hammersmith and City line for the same reason, which is also causing minor delays on the tram network.
Merseyrail has announced “significant disruption” to services, with no trains running on the Kirkby line.
Greater Anglia has announced timetable changes, including a reduced service on the Norwich-London Liverpool Street, Cambridge-London Liverpool Street main lines and Southend-London Liverpool Street route.
Southeastern has said there will be no evening services to and from London Cannon Street on the Bexleyheath Line, and fewer services on other lines.
How does heat affect the network?
Extreme temperatures make introduction of speed restrictions on railway lines necessary across the country to ensure the safe running of trains.
Steel rails absorb heat easily and tend to hover about 20 degrees above the surrounding air temperature, meaning they could hit 60C, making them more likely to bend, flex, and in some cases, buckle.
Trains run at slower speeds in extremely hot weather to place the rails under less strain.
Overhead electric lines are also susceptible to faults in extreme temperatures when steel wires overheat, which can cause them to hang low. This increases the risk of them getting caught on passing trains and knocking out the electricity supply.