Mark Langman, Network Rail route managing director for Wales, said there was 'potential for quicker and more frequent journeys on a network that is more resilient and reliable' in future.
He was speaking as the organisation set out plans for investing £1billion in the rail system.
This is an exciting time for the railway. We are now carrying a record number of people on record numbers of trains at record levels of reliability. This is an ambitious plan that will help move the railway in Wales to the next level.
More top news
Dry and cold with clear spells overnight, with frost possible in rural areas!
Our four regional teams will be looking to maintain their 100% European records this season when they go into action starting this evening.
The Queen has paid tribute to the spirit and dignity of the people of Aberfan, 50 years since the disaster which killed 116 children.