Plans for a pedestrian plaza on Dublin's College Green have received another setback with An Bord Pleanála directing a further period of public consultation.
The board was due to give a decision on the plaza scheme on 2 November but it has written to Dublin City Council saying the plans need more public consultation.
The board had previously requested further information from Dublin City Council on the effects of banning East West traffic movements through College Green.
It stated it wanted more information on "the wider city implications of removing traffic from College Green and the adequacy of infrastructure" across the entire city centre.
Dublin Bus had opposed the rerouting of buses travelling to and from Dame St through College Green.
The National Transport Authority had also expressed concern at the lack of segregated cycling lanes at College Green.
While local businesses in the Parliament St area had expressed concern at the proposed rerouting of bus routes there.
Dublin City Council submitted additional information on these issues but the planning authority has decided that this constitutes "significant additional data" that needs to be considered by interested parties.
The council has until 19 November to place newspaper advertisements on inviting further submissions on this information for a three week period.
The city council had previously stated that the traffic restrictions are necessary to allow the efficient operation Cross City Luas which is due to start full operation next month.
Council officials have stated that if East West bus movements are allowed it will be necessary to then restrict taxis.