The Regency Road to Pym Street (R2P) Project is the latest stage in the plan for a North-South corridor through suburban Adelaide, providing uninterrupted traffic flow in and out of the CBD and inner suburbs. The project comprises an at-grade motorway from the existing motorway to the north, an overpass over Regency Road; and an at-grade motorway from Regency Road to Pym Street, transitioning to the existing lowered motorway to the south.