Lydia Maccarrone is frustrated. The 23-year-old administrative worker has lived her whole life in the Leppington area on Sydney’s south-western fringe, 50 kilometres from the CBD, and has been banking on a raft of promised transport improvements including new buses, train lines and roads to improve accessibility in the fast-growing suburb.

But after three successive NSW Coalition government terms, Ms Maccarrone is still stuck in traffic every morning.