A review of future road projects with a view to possibly reallocating funds to more sustainable modes of transport is among the recommendations in an Oireachtas committee report.

The report, by the Committee on Environment and Climate Action, makes 47 recommendations on how to achieve a 51% reduction in transport sector emissions by 2030.

"It's the first real deep dive into the transport sector by the Oireachtas system on how we might reduce transport emission," according to committee chair Brian Leddin.

Cycle superhighways, road user charges, free public transport and a reduction in private car ownership are also recommended in the report.

In order to achieve these aspirations, the committee seeks to review planned road projects "to assess where funding could be reallocated towards more sustainable modes of travel".

"Roads induce private care journeys, private care journeys represent 60% of our transport emissions profile," Deputy Leddin explained. "That's not to say all roads shouldn't be built".

However, the Green Party TD believes that now is the right time to assess such projects.

Sinn Féin's Darren O'Rourke suggested that the Kilmoon Cross to Rath Roundabout scheme in his own constituency of Meath East be used as a pilot project.

He said there are proposals in place for a major piece of road infrastructure that "is at risk of working its way through a process only to find out in a number of years' time that it doesn't align with Government priorities or climate priorities or transport priorities".

Deputy O'Rourke said there are congestion issues, but that it might be possible to resolve them in a way that is conducive to a reduction in emissions.

The report also recommends congestion charges, although Fine Gael's Alan Farrell said that now was not the right time to introduce them for Dublin, explaining that alternatives must be in place before disincentives are introduced.

He said those alternatives are not fully there yet.

Other recommendations include moves towards zero-emission trucks and delivery vehicles as well as a reduction in the cost of electric vehicles to bring them in line with fossil fuel vehicles.

Independent Senator Alice-Mary Higgins said that increased use of public transport in rural areas is possible, provided that services are reliable and frequent.