The return of schools tomorrow "is likely to give rise to additional pressure" on public transport services.
That's according to the National Transport Authority (NTA) which is warning that some passengers are being left behind due to the limited capacity on public transport.
Capacity is currently restricted to 25% during Level 5 restrictions which is causing some issues.
Those problems are "most acute" on buses early in the morning and particularly in the Dublin region.
Head of Public Affairs with the NTA, Dermot O'Gara, says public transport should only be used when necessary.
He said: “The return of schools on Monday is likely to give rise to additional pressure.
"We are anxious to make sure that customers are aware of the situation.
“NTA is asking people to avoid travelling at peak times and only to use public transport for essential purposes.
"Nobody wants to see a situation where essential workers, such as those on the healthcare frontline, cannot get on a bus.
He added: “People who can work from home should work from home.
“We continue to encourage people to walk or cycle where possible. Customers who have no alternative to public transport should expect their journey to take longer and plan ahead accordingly.
“Drivers and other public transport staff are working in a very challenging environment, and customers should remain respectful of them at all times.
“And of course, wear a face covering while using public transport.”
