One of Perth's major thoroughfares may be closed to general traffic and turned into a bus-only road under a State Government proposal being considered by the City of Perth.
The Public Transport Authority has proposed that the section of William Street, between Murray Street and Hay Street malls, be gradually converted into an exclusive bus, cycle, pedestrian and taxi zone where private vehicles are prohibited.
The three-stage process is expected to begin next month when Riverside Drive is permanently closed to make way for the Elizabeth Quay project.
The PTA suggests that new turning lanes be created on William Street to divert traffic from the section between the two malls and installing five bus stops on the western side of the road.
Buses that now run along Barrack Street will be re-routed on to William Street.
The final stage, scheduled for the 2015-16 financial year, would involve Barrack Street being opened to two-way traffic and William Street closed to private vehicles.
The PTA believes the plan will concentrate bus priority to one street and improve overall public transport efficiency in the CBD.
The City of Perth is expected to give conditional approval to the proposal when council meets tonight.