Activists have have declared Lower Liffey Street in Dublin a pedestrian zone.
The Streets Are For People group are blocking motor vehicle traffic from entering the street north of the Ha'apenny Bridge.
The same group carried out a similar action on South William Street in July.
The city council announced plans to pedestrianise Liffey Street earlier this year -- but businesses including Arnotts and Brown Thomas said they would oppose the move.
Green Party Councillor Neasa Hourigan chairs the Dublin Pedestrian Network, which set up Streets Are For People with the Dublin Cycling Campaign and the Dublin Commuter Coalition.
She says the council should press ahead with a plan to officially pedestrianise the street.
We have occupied Lower Liffey Street and declared a #CleanAirZone until 6pm. A council proposed pedestrian plan for this street is being threatened with legal action by large car park owners in the area. #StreetsAreForPeople pic.twitter.com/pbeZmwRIIz
— Neasa Hourigan TD (@neasa_neasa) August 31, 2019