A carefully controlled experiment in Brisbane has delivered sobering evidence that Australia's car culture runs far deeper than environmental ideals or fiscal incentives. When researchers asked ten people to abandon their vehicles for 20 days, participants encountered not philosophical objections but practical impossibilities. None wanted to continue car-free living when the trial ended.
The finding cuts through much of the optimistic rhetoric around sustainable transport. Even participants who discovered unexpected benefits, including financial savings and new friendships formed through shared commutes, concluded that car-free living simply did not work in Brisbane's sprawling geography and underdeveloped alternative transport networks.
The study explored the potential for car-free living in low-density, sprawling urban environments through a 20-day intervention, with car-dependent participants from Brisbane asked to live without a car during this period. This was no casual survey asking people about preferences. Researchers collected detailed data through interviews and travel diaries, documenting how participants actually adapted when their cars were unavailable.
The mechanics of suburban life revealed themselves quickly. Brisbane's layout, developed around the assumption that everyone drives, made alternatives impractical. Public transport connections proved sparse and unreliable. Cycling infrastructure remained fragmented. Walking to shops or workplaces, realistic in some inner suburbs, became genuinely dangerous in outer areas. Parents faced particular pressure, juggling school drop-offs, appointments, and shopping with public transport schedules designed for commuter flows, not the complex routing of family life.
What distinguishes this study from mere anecdotal complaints is its focus on what participants actually learned rather than what they claimed to prefer. While giving up cars entirely is unrealistic in these cities due to limited accessibility and transport alternatives, study participants were likely to slightly reduce their reliance on cars, suggesting that experiencing car-free living, even briefly, can help people break away from automobility.
The modest finding points to a legitimate insight. Short-term exposure to alternatives does shift behaviour incrementally. Some people may keep their second car at home, use ride-sharing for occasional trips, or bike for short journeys. These outcomes, while meaningful, stop well short of the car-free vision. Australia's transport planners cannot simply will car-free cities into existence through demonstration projects or financial incentives.
Brisbane itself recognised this constraint. Urban sprawl and car dependency prevent the city from being considered a best practice model, and as it will take a long time to correct the mistakes of the post-war period in terms of transport planning, more substantial efforts must be made to change transport behaviour. The city acknowledged that addressing car dependence requires not experiments in lifestyle change, but decades of deliberate urban redesign.
The challenge for policymakers is clear. In Australia, 72% of journeys take place in cars, significantly outpacing walking or cycling (15%), public transport (13%) or rideshare and taxi (1%). These proportions did not emerge from preference or habit alone, but from infrastructure decisions made over decades. Reversing them demands comparable commitment.
Reasonable people disagree on how urgently Australia should pursue car-free cities. Some prioritise reduced emissions and liveable urban centres. Others emphasise the freedom, reliability, and independence that private vehicles provide. But the Brisbane study suggests both camps share a grounding in reality: you cannot engineer car-free behaviour without first building the transport networks, dense housing, and local services that make cars optional rather than essential.
The participants who finished the 20-day trial without their cars learned something valuable. They discovered that going car-free in Brisbane was possible, but only through exhausting effort and significant sacrifice. For most people, that verdict suggests not environmental failure, but honest acknowledgment that transport infrastructure shapes behaviour more profoundly than any appeal to do the right thing.