The Scottish Government is being urged to scrap peak rail fairs and offer free travel to people over 60 and under 24 ahead of the announcement of the budget.
Deputy First Minister John Swinney will outline tax and spending plans for the next financial year next week, against the backdrop of rising inflation and prices, as well as public sector pay negotiations.
In a letter to Mr Swinney and First Minister Nicola Sturgeon, the train drivers union Aslef said reforming fares on Scotland's railways would contribute to meeting net-zero targets and help Scots during the cost of living crisis.