They'll replace the existing routes run by Bus Eireann
From today a number of Dublin Commuter routes in counties Offaly, Kildare and Meath will be run by Go-Ahead Ireland.
The new 120 a, b, c, d, e, f and x routes will serve places like Tullamore, Edenderry, Enfield, Newbridge, Milltown, Clane, Straffan and Celbridge.
They'll replace the existing routes 120, 121 and 123, which were run by Bus Eireann.
National Transport Authority spokesperson, Dermot O'Gara says the new buses will look different: