Fianna Fáil has ramped up its attack on Transport Minister Shane Ross ahead of a Dáil debate on the future of cash-strapped Bus Éireann.
The party’s transport spokesperson Robert Troy suggested that Mr Ross has only used public transport once in his life.
But he stopped short of calling for a confidence motion, saying the issue is about Bus Éireann workers, and not personalities.
TDs will tonight debate a Fianna Fáil private members motion which seeks to resolve the financial issues facing the company.
The motion recognises that Bus Éireann suffered reported losses of €5.3m in 2016 and that these are projected to increase this year.
It says the company could face liquidation within 24 months - as unions now warn of industrial “warfare”.
Speaking to reporters at Leinster House on Tuesday, Mr Troy launched a stinging attack on his counterpart.
“He has taken a back seat. He has been remarkably mute in relation to the whole issue...he has said very little apart from tweeting out one morning at 10:20am saying he was on his way in and using public transport, possibly for the first time in his life,” Mr Troy said.
“He hasn’t been hands on in the whole area of public transport. This is a critical issue.”