The capacity restriction was eased in the government's roadmap this week.
Capacity on buses and trains has increased to 100 percent from today.
It's in order to facilitate the return of schools, college and those working in offices.
The National Transport Authority says it'll take awhile for transport users to return to normal.
Dublin's public transport has removed social distancing and now I will never take the bus or tram again.
— Ali (@themaholupper) September 1, 2021
They say they're operating at below pre-covid levels across buses, trains and trams.
NTA chief Anne Graham has commented on the 'relatively quiet' return to 100% capacity.
"On average, we're running at about 55% of Covid times," she said.
Masks will continue to be mandatory on public transport past October 22nd.