The N20 road is a national primary road in Ireland, connecting the cities of Cork and Limerick. Buttevant, Croom, Charleville, Mallow and Blarney are major towns along the route. A short section of the route is motorway standard and is designated as the M20 Motorway.
N20 on the dual carriageway bypass into Limerick, approaching the exit for Dooradoyle. As of 2009, this section has been designated motorway.
The M20 outside Limerick city approaching junction 2 northbound
A "Route Confirmatory Sign" on the M20 showing distances to destinations
A national primary road is a road classification in Ireland. National primary roads form the major routes between the major urban centres. There are 2649 km of national primary roads. This category of road has the prefix "N" followed by one or two digits. Motorways are prefixed "M" followed by one or two digits.
Naas Road (N7), non-Motorway high-grade dual carriageway.
Sign in Dublin indicating the principal national primary roads fanning out from the capital city.
2+2 section of the N4 (Dromod-Roosky bypass) in County Leitrim.
N11 Exit sign. This route has since been upgraded to motorway status