They'll serve the west and south-west of Dublin, along with parts of Kildare.
Three new bus routes have been unveiled in Dublin.
The W4, W61 and W62 routes will serve the west and south-west.
It's part of Phase 5 of BusConnects - a partnership between the National Transport Authority and Go-Ahead Ireland.
Route W4 stops near Liffey Valley Shopping Centre on the Lucan Road, where passengers can connect with the C1, C2, C3 and C4 services at the same stop.
The W4 also connects with the N4 orbital route at Blanchardstown Shopping Centre, interchanges with the Luas at Tallaght and Cheeverstown, and will connect with commuter rail services at the new Kishoge station.
Route W61 connects with the C3 and C4 routes at Maynooth and with the C4 in Celbridge, and with commuter rail services at Maynooth and Hazelhatch stations in County Kildare.
Route W62 interchanges with Luas services at Tallaght, Citywest Campus, and Saggart.
The new services will officially begin operating this Sunday, 25th June.
Anne Graham, CEO of the National Transport Authority, says the new, orbital routes will allow passengers to get around, without having to travel into the city;
“The launch of Phase 5a is yet another step forward in improving the connectivity and reliability of Dublin’s bus networks through the BusConnects redesign. Phase 5a’s orbital routes allow passengers to travel between suburbs without having to first travel into the city centre, providing for more efficient trips and decreased journey times.”
Andrew Edwards, Managing Director of Go-Ahead Ireland, added that it'll "greatly enhance the overall accessibility and efficiency of the network, and Go-Ahead Ireland looks forward to continuing to serve its communities and customers.”