Westmeath councillor Louise Heavin says the speed limit on the Athlone dual carriageway should be reduced to 80 kilometres an hour.
The Green Party councillor is making the call following a recent report on noise pollution for people who live along the route.
The current speed limit on the relief road is 100 kilometres per hour, but Councillor Heavin says if Transport Infrastructure Ireland agree to reduce the speed it will mean less noise, and less emissions for the general urban area.
She says it's common practice in the UK for lower speed limits to be put on national routes through towns.
"The report was issued to us last week and one of the recommendations was to reduce the speed limit. It was the most effective recommendation in reducing the noise levels. So, on the back of that i'm now asking that we move ahead and ask TII to reduce the speed limit. It's not only going to help with the sound, but it's going to help with safety along that stretch of road and emissions in the location that it's in because it is adjacent to residential buildings".
