NETWORK Rail has been asked to provide assurances that recent train delays linked to signalling problems across Scotland will not be repeated.
Transport Minister Keith Brown, who met with Network Rail chiefs on Wednesday, said a dip in the performance of the rail network in recent weeks had been concerning.
Thousands of rail travellers were stranded at Waverley this week after signal boxes were knocked out by lightning strikes. Soaring temperatures also forced widespread disruption earlier this month.
The operator is installing sprinklers to cool the track and painting vulnerable sections of line white to reflect heat as part of contingency measures.
Mr Brown said: “I want to see a rail network that delivers the kind of passenger services they rightly deserve.”