All main roads across counties Galway and Mayo are passable after a slow but steady thaw throughout the day.
Gardaí in Mayo say that some compacted snow remains on some routes but that generally speaking the situation is much improved.
However, they are reiterated a warning about side roads that have not been treated in recent days.
Some icy stretches remain on many back roads, particularly those on higher ground.
Mayo County Council has appealed to motorists to keep their distance and not overtake gritting trucks.
This followed reports of some motorists passing out snow ploughs and surface treatment vehicles over the weekend.
The Council's Road Safety Officer, Noel Gibbons, said this was hazardous behaviour, especially in light of the icy conditions.
In Co Galway, there has been a general improvement as snow melts in most areas.
Back roads around Ballinasloe, Loughrea and Athenry are still treacherous in spots and a forecasted dip in temperatures overnight could lead to further problems.
In both counties, packed snow and a hard frost has made some footpaths very slippery. Pedestrians have been advised to take care, particularly in areas that remained shaded for most of the day.