Rail services across the Central Belt, East Coast and Highlands were disrupted due to “high track temperatures”, ScotRail announced.
With temperatures on the Scottish mainland in the mid-20s, the network is operating with speed restrictions on key routes around Glasgow, Edinburgh and Inverness.
Service delays are expected between 1:00 PM and 7:00 PM.
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Network Rail explained: “This reduces the forces acting on the track by trains. In direct sunlight, steel rails can be 20 degrees warmer than the local air temperature, causing them to expand in the heat, meaning they can bend or twist.’
The following rail routes will have speed restrictions in place for most of Thursday, which will affect journey times:
- Glasgow Queen Street to Stirling/Perth/Inverness
- Glasgow Queen Street to Edinburgh
- Central Glasgow and Edinburgh via Carstairs
- Central Glasgow and Edinburgh via Shotts
- Edinburgh – Perth via Fife
- Addington – Foldhouse
- Edinburgh Park – Haymarket
- Edinburgh Waverley – Musselburgh
- Livingstone North to Bathgate
- Edinburgh v North Berwick/Dunbar
- Helensburgh Central / Milngavie to Edinburgh via Bathgate
- Edinburgh – Dunblane
For more information on rail disruptions, check out the live ScotRail network map.
Information on non-ScotRail travel disruptions can be found via Network railway.