Transport planners do not expect future projects like Dublin's Metro to be postponed because of the long-term effects of Covid-19.
The National Transport Authority (NTA) has begun a public consultation on the strategy for the Greater Dublin Area 2016 to 2035.
Deputy CEO Hugh Cregan said services could be less frequent in a "post Covid world" but it was not envisaged that planned projects would postponed.
He said the NTA was planning for scenarios including greater numbers working from home, more university students studying online and more people shopping online as well as 'business as usual'.
Mr Cregan said it could mean less frequency of bus services for instance when social distancing is no longer required but patterns have changed.
NTA Chief Executive Anne Graham said it is expected that any reduction would be temporary and that changes would be overtaken by population growth.
People are being asked for their views on transport priorities and which modes are more important between now and 22 January .
Other plans already in the strategy include a DART expansion to Drogheda, Maynooth and Celbridge.
Luas lines to Finglas, Lucan and Poolbeg are also planned as well as Bus Connects and improved cycling and walking facilities.
There will be further consultation next year to inform a new draft strategy for 2022 to 2042 which will be given to the Minister for Transport by the end of next year.
The NTA plans to have an application ready by next June to for a Railway Order or permission to build Dublin's Metro.
Meanwhile, feasibility studies will be carried out on proposals to build a Metro extension either to Terenure/Rathfarnham/Knocklyon or UCS/Sandyford
An assessment will also be made of a rail line to Navan.