The Minister for Transport, Martin Cullen, has told the Dáil there is to be a single point barrier-free tolling system on the M50 when the upgrade of the motorway is completed in 2008.
He told Green Party TD Eamon Ryan that there could be no system similar to congestion charges until all the elements of the Dublin transport plan were in place in 2015.
Mr Cullen had earlier suggested that the M50 would move to a multi-point tolling system.
