A surge in roadworks is causing headaches for road users as councils scramble to get their €525m maintenance and improvements programme back on track after lockdown restrictions.
The Department of Transport says councils will not be allowed carry over grant funding if the backlog leaves any of this year's money unspent.
Some councils are planning to forego the traditional August fortnight holiday to keep road crews working through the summer.
The AA, meanwhile, is warning that the combination of ramped-up planned works, extra works to create cycle and bus lanes, and "wonky" traffic patterns means all road users need to be extra vigilant as they get out and about more.
The Road Safety Authority (RSA) is delivering a similar message, warning that there is a "new normal" on the roads that people need to adjust to.
Eamonn Hore, director of transport services with Wexford County Council, which co-authored national return-to-work protocols for local authority outdoor staff, said there was pressure to get back on schedule.
"We've lost seven really good weeks. When the weather is like it was, it's great to be out doing roadworks," he said.
Mr Hore said it was likely roadworks would continue late into the year whereas normally the aim was to finish them by September or October.
"In Wexford we have 150 individual schemes to finish. That's 184km of road. Our lads normally take two weeks off in August but they're going to work through that to try and get back on track."
The Department of Transport makes an allocation to councils early each year to help maintain local and regional roads. This year a total of €525m was allocated.
"There isn't any current provision for local authorities to carry over unspent monies from one year to the next," the department said. "Following the recent resumption of work in the roads sector, the feedback from a range of councils to date has been that they expect to fully spend their 2020 regional and local road allocations in the current year."
Transport Infrastructure Ireland said it did not expect major delays with national roads projects as time off the job was spent planning for the return so that work could resume efficiently.
Conor Faughnan of the AA warned, however, that the resumption of works brought extra challenges.
"There has been something of a backlog of works and those are all happening now so it's busier for roadworks than it would normally be," he said.
More breakdowns were also occurring as cars that had not moved in months or missed out on their usual service were put back on the roads.
"We've had days over the last couple of weeks that were busier than the equivalent day last year, which is remarkable," he said.
"So there's a lot going on, plus there are new cycle lanes and bus lanes and as well as that traffic patterns are wonky because people are not back to their normal schedules.
"All of that can make the roads feel different so people really need to take more care."
RSA chairperson Liz O'Donnell said she was concerned some motorists may be "rusty" after lockdown.
"I am also fearful that as people start getting back on the roads, they will fail to realise that there is now a changed environment on our roads," she said.
To date this year, 64 people have died on the roads, equal to the same period last year, but the number of pedestrians killed has increased from 12 to 18.