Planners envisage that by the middle of this century most Sydneysiders will be able to reach their place of work within 30 minutes using public transport or "active" options such as walking or riding.

The NSW government has released its Future Transport Strategy 2056 report, which suggests investment will increasingly be focused on "three cities" built around Western Sydney Airport, Greater Parramatta and the existing CBD.

"Customers will be able to travel to one of these cities or to their nearest centre within 30 minutes of where they live by public or active transport," the report states.

Premier Gladys Berejiklian in Sydney on Sunday: "Now for the first time we have a co-ordinated vision for our state for the next 10, 20, 30 and 40 years." AAP

"This will give people better access to access jobs, eduction and essential services."

The report suggests getting people out of their cars and using sustainable transport will reduce congestion and emissions and improve air quality and wellbeing.