New research highlights the broader costs of Australia's car-dependent transport system
Who pays for Australia's roads and transport infrastructure is a question that often sparks debate. A new Australian study published in the journal Transport provides fresh insight into the true cost of Australia's car-dependent transport system—and who ultimately bears those costs.
Researchers estimated Australia's private vehicle economy costs around $316 billion every year. While motorists pay many of the direct costs of owning and operating a vehicle, including fuel, registration, insurance and maintenance, the study found these account for only around half of the total economic, social and environmental costs associated with personal vehicle use.
The remaining costs are borne by governments and the wider community through public spending and broader societal impacts. These include road construction and maintenance, congestion, air pollution, greenhouse gas emissions, road trauma and the provision of extensive parking infrastructure.
The findings challenge the common perception that motorists fully "pay their way" and suggest Australia's transport system relies on substantial public investment beyond the costs paid directly by drivers.
The authors argue this highlights the importance of considering the full costs and benefits of different transport options when planning future infrastructure. They also suggest further research into alternatives such as public transport, cycling, walking, car sharing and other forms of shared mobility that could reduce dependence on private vehicle ownership.
For Pedal Power, the research reinforces the value of investing in a transport network that provides genuine travel choice. Safe, connected cycling infrastructure allows more people to choose active travel for everyday trips, helping reduce congestion, improve public health, lower transport emissions and make more efficient use of existing infrastructure.
A balanced transport system benefits everyone. Whether people drive, ride, walk or use public transport, providing safe and practical alternatives to private car travel helps create healthier, more affordable and more resilient communities.
The full article, Car owners pay around half the costs that they incur; taxpayers pick up the rest, was written by Dorina Pojani, Hexia Zhang and Neil Sipe from The University of Queensland and published in Transport.
