Work will begin on a new Changing Places facility at Dundee station on Monday 10 June.
Changing Places toilets are much bigger than traditional accessible toilets and are designed to meet the needs of people with complex care needs.
Installation of the much called-for facility, which will be located at platform level, is expected to take around five weeks to complete.
ScotRail Head of Social & Economic Development James Ledgerwood said:
“I’m delighted that we’re able to provide a Changing Places toilet for our customers using Dundee station.
“Our network is for everyone, and we hope this new facility will give more people with extra needs the confidence to travel by rail.”
Transport Scotland Head of Rail Franchising Andrew Mackie said:
“I am pleased to learn that installation works have commenced on the Changing Places toilet at Dundee station.
“This brings us a step closer to providing facilities for all customers with a disability, enabling them to use public transport and take part in everyday activities.”
Dundee City Council Development Committee Convener Lynne Short said:
"I am absolutely delighted that work is starting on this really important facility at Dundee Railway Station.
"It will make such a significant difference to people's lives and open up journeys and experiences that maybe would have been inaccessible in the past.
"I can't wait to see it open."