People who are travelling to and from Covid-19 tests are being urged not to open their window if they are stopped at a garda checkpoint en route.
Instead they should display their test appointment confirmation through the window.
Gardaí have said that at least five unmasked drivers who were on their way to a testing centre rolled down their windows to talk to gardaí at one checkpoint near Ashbourne in Co Meath yesterday.
Meath Crime Prevention Officer Dean Kerins said gardaí simply want to raise awareness among motorists, who he said are doing everything right otherwise.
"This is not to give out but we are asking people be conscious," he said.
He said the majority of motorists just want to explain to the garda where they are going and why they are outside their 5km radius.
"We are asking them to please just show your test notification on your phone through the car window to prevent the potential spread of the virus," he said.
There are an increased number of garda checkpoints on national roads and additional garda patrols in scenic areas after further restrictions were introduced earlier this week.
More uniform office-based gardaí are being deployed to frontline duties.
The force also said 70 trainees are also being sworn in as full-time members and 60 reservists will be deployed.
Meanwhile, Garda Representative Association President Frank Thornton said gardaí should be prioritised for vaccination as they are criticial frontline workers.
Speaking on RTÉ's Today with Claire Byrne, he said 700 members are currently self-isolating with 75 having contracted the virus.