Dublin Bus operates over 136 routes, servicing 5,000 bus stops, across its service network including- Public Service Obligation services and commercial services, which include Airlink and sightseeing tours. Services operate from 5.00am until midnight and the Nitelink service operates from midnight until 4.00am at weekends. Dublin Bus operates 364 days a year and is the main public transport provider for the Greater Dublin Area (extending as far as Newcastle in Wicklow, Balbriggan in north Dublin, Dunboyne in Meath and Maynooth in Kildare)