The Rapibus is a bus rapid transit system for the Société de Transport de l'Outaouais (STO) in the city of Gatineau, Quebec. Construction was completed in the summer of 2013 with service beginning in the fall. The Rapibus aims to speed up the service for commuters in growing sub-divisions in the northern and eastern areas of the city by alleviating the congestion on key arteries currently served by bus-designated lanes. A direct link to Ottawa is not included in the current Rapibus plan due to the uncertainty of the future of Ottawa's rapid transit network following the cancellation of a planned light rail line.
In the 1990s, the STO and the Communauté Urbaine de l'Outaouais had initiated plans to improve public transit in the Outaouais urban community as traffic problems were growing in several areas particularly in the eastern end of the city in the Quebec Autoroute 50 corridor as well as other bridges spanning the Gatineau and Ottawa Rivers. At that time, the CUO privileged existent railway corridors including the Canadian Pacific line in Hull and Gatineau for a future rapid transit corridor which would by-pass some the most congested areas of the city.
Plans were also made for improved inter-provincial crossing to Ottawa. Before newer studies were made, several new bus lanes were added on Boulevards Gréber, Fournier, Maisonneuve and Alexandre-Taché as well as the Portage Bridge in order to speed up the service in the late 1990s and 2000s. Environmental assessments began in the 2000s but government funding was not immediately available by both the federal and provincial levels.