New figures from the Central Statistics Office show that transport volumes have dropped after the latest Government Covid-19 restrictions introduced earlier this month.
These restrictions included a request for people to avoid public transport if practicable and a request to businesses to facilitate working from home where possible.
Tighter restrictions were also imposed in counties Kildare, Offaly and Laois.
The CSO noted that the pace of recovery of road traffic volumes for cars and HGVs to pre Covid-19 levels continues to outstrip that of public transport passenger numbers.
Today's figures show that the number of bus and rail journeys taken during the week starting August 16 was 58.4% lower than the week starting March 1.
Rail was the mode of transport that was most severely hit since the onset of the coronavirus crisis.
The CSO said that in the week starting April 5, the number of journeys on trains was 97.2% lower than it was in the first week of March of this year. Rail data includes passenger journeys on Intercity and DART services.
The CSO data also shows the impact of Covid-19 on the Luas red and green lines, while very similar, has been slightly greater on the green line.
Meanwhile, car traffic volumes for the week ending August 22 were 19.8% lower than 2019 levels at regional locations and 22.7% lower in Dublin, the CSO said.
But HGV traffic volumes continue to exceed 2019 levels for the ninth consecutive week in selected regional locations.
The volume of HGVs measured at selected sites in Dublin from June 21 to August 22 exceeds that measured for the same period in 2019 by 1.5%, but the pace of growth has slowed, the CSO added.
Data from the main Irish airports - Dublin, Cork, Shannon, Knock and Kerry airports - shows that air transport continues to be heavily impacted by Covid-19 restrictions.
The number of passengers travelling through Dublin, Cork and Shannon airports in the first seven months of 2020 was 70.3% lower than the same time last year.
According to the CSO, the total number of passengers handled by those airports in July fell from 3,911,133 to 416,436 - a slump of 89.4% when compared with the same time in 2019.
Data for Knock and Kerry airports was not available for today's data, the CSO added.
