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Large metropolitan areas' public transport investments can get a better return than smaller cities

One of the new Light Rail Vehicles. Source: AAP

A new study reveals Public transport investments in large metropolitan areas can get a better return, with more passengers adopting public transport, than those in smaller cities.

A new study conducted by researchers from the University of Sydney reveals public transport investments in large metropolitan areas reap a better return, with more passengers adopting public transport, than those in smaller cities.

The research, published in Nature Sustainability, analysed data collected from 48 metropolitan areas in the United States, including New York, Boston, Minneapolis and Atlanta, which showed a positive correlation between ridership, residential density, and the convenience of using public transport.

The research drew on data collected by the University of Minnesota, measuring the number of jobs over 48 metropolitan areas that were accessible by public transport. Efficiency was measured by assessing whether improvements to public transport influenced residential density.

It also revealed it was more beneficial for transport operators to expand in big cities than launch into greenfield markets (undeveloped areas), as larger cities yield a greater return on transit improvement than smaller towns.

Civil Engineering PhD candidate Hao Wu said:"With an increase in transit accessibility, transit commuter density catches up to, and begins to exceed, auto commuter density."

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