|Location Map ( geo)|
|From:||Dublin Port (O181350)|
|Distance:||45.5 km (28.3 miles)|
|Former Number(s):||N1, M32|
|Route outline (key)|
Between the openings of the M50 Western Parkway, and the southern section, a short section of road linking the Tallaght Interchange and the R114 at Firhouse existed, numbered N50 and not under motorway regulations.
In 2012, the N50 picked up two non-motorway spurs: the former N1 between Kilmore and Whitehall and the former M32. Both of these, plus a short section of road between the R131 and City Interchange are non-motorway.
As with most of the numbering changes in Dublin, the signs are being replaced very slowly, and the former N1 still has no signs of its own but a large N1 sign at each end.