Mitigate congestion and the associated costs of time lost, emissions and pollution
Delay or possibly even eliminate the need to build major new freeways or widen existing ones
Reduce aggregate kilometres of travel
Enhance horizontal equity by enabling high-value trips to take priority over low-value trips
Shift some travellers from cars to public transport
Provide a source of revenue for funding public transport improvements
Increase the speed of on-road public transport modes like buses and trams
Increase on-road speeds for business travel and freight, thereby increasing productivity
Shift some demand to the shoulder and thereby help make non-peak public transport more sustainable and financially viable
Give residents an incentive to live at higher densities in more central locations.