Parliament Street is to be traffic-free at weekends.
Cars are banned from the street from 11am to 11pm on Saturdays and Sundays in August.
Dublin City Council says pedestrians and cyclists will be encouraged to enjoy Parliament Street without the presence of cars.
There will be traffic management on-site during the hours of the traffic-free arrangement and deliveries can be made on the street up until 11am.
Permanent changes to Parliament Street are currently being finalised as part of the City Centre Transport Study
A draft will be published for public consultation in August or September.