ScotRail drivers could walk out on strike for the first time in decades just weeks after the franchise passed to Scottish Government control.
Members of the ASLEF union have today rejected a pay offer from bosses after they claimed it failed to take into account the rising cost of living.
ScotRail - which operates the vast majority of passengers services north of the Border - was brought under control of SNP ministers on April 1 after a previous contract with Abellio was torn up.