Cyclists are to be urged to take an alternative route through the city because of the new Luas line.
It follows claims last week they've already been banned from travelling down Dawson Street.
The National Transport Authority's published a report which identifies seven roads in the city centre, which are now 'difficult or inappropriate' as a result of the new tram tracks.
Extract from Luas Cross City Cycling Report Oct '17 via NationalTransport.ie
They are Marlborough Street, Dominick Street, Parnell Square, Nassau Street, Grafton Street, Dawson Street and College Street.
It's advising cyclists to dismount where there isn't enough room.
Proposed cycle route for cyclists wishing to travel south to north of the Liffey via nationaltransport.ie
Green Party councillor Ciaran Cuffe is very concerned:
"I think they've got to have a rethink of this. It's becoming obvious the Luas design team didn't take the needs of cyclists into account as much as they should have. I think at this late stage, the NTA needs to sit down with cyclists and see what they can do to improve things in central Dublin."
It's looking at developing alternative routes with Dublin City Council that could possibly include two way lanes through College Green.
An NTA spokesperon has told 98FM News
"The advisory in place for cyclists on the Luas Cross City applies to less than four percent of the full stretch of the line.
Cycling arrangements have been put in place along many sections of the Luas Cross City route.
However, alongside certain sections of the corridor there is the potential for a significant volume of cyclists having to interact, in a restricted width between kerbline and tram track, with a high number of trams, buses/coaches and taxis which will be using the same street space. This arrangement gives rise to concerns for the safety of cyclists using these particular links, with the possibility of bicycle wheels becoming caught in the groove of the tram track leading to accidents and incidents."