A reduced speed limit of 30km/h for motorists in Dublin is to be introduced by the city council.
The introduction of the limit, down from the present 50km/h, is imminent and other cities are likely to follow suit.
The radically reduced speed limit is understood to be part of a new initiative to prevent the deaths of cyclists and pedestrians.
Dublin City Council is set to bring in the 30km/h limit in key arteries around the capital including Westmoreland St, Dame St, D'Olier Street, the north and south quays and other streets in the city centre.
In order to do this, the city council is going to have to set about delisting roads in the capital which are currently designated as national primary roads.
City officials have already held discussions with the National Roads Authority.
A 30km/h limit currently applies to O'Connell St, parts of Talbot Street and Temple Bar but the majority of roads in Dublin city are 50km/h zones.
Motoring organisations have welcomed the proposed speed limit in the city centre.
But the limit may not be imposed for a number of months as it has yet to be put before councillors or go for public consultation.
The scheme would mean a 40% reduction from the present 50km/hour limit and operate in an area running from the Four Courts to the Customs House and from St Stephen's Green to Parnell Square.
The Society for the Irish Motor Industry said it would agree to the limit as a way of improving road safety.
