Rail passengers to and from Dumbarton and the Vale are facing disruption this morning (Wednesday, January 23).
There are delays to services between Helensburgh Central and Edinburgh and services between Springburn and Dumbarton Central due to a fault with a signalling system earlier today at Yoker.
The service is returning to normal, but some services may still be delayed and disruption is expected until 2pm.
A statement on Scotrail's website said: "Our staff have managed to rectify the fault and services are able to run via Yoker. We are working hard to get services back on schedule."
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