The Hidden Story of Why Western Australia's Commuters Are Getting Free Trains

Perth's commuters are switching to public transport in record numbers as petrol prices soar. Here is the Australian city that is accidentally proving a point about how energy crises reshape urban mobility.

Western Australia's government reported a 'big spike' in public transport usage over the three weeks following the start of the Iran war in late February 2026 — a usage increase whose cause is as obvious as its implications are instructive. Perth petrol prices have risen significantly in line with global oil price increases, making the marginal cost comparison between driving and public transport dramatically more favourable for transit than it has been in recent years.

Perth is, in the Australian urban geography, among the most car-dependent cities in the developed world. Its sprawling low-density suburban form — a product of abundant land, cheap petrol, and planning that assumed private vehicle access as the default — has historically made public transport a supplementary option for most journeys rather than a competitive alternative to driving. The combination of a high-quality heavy rail network connecting the CBD with suburban nodes and a bus network feeding those nodes has created the infrastructure for much higher transit use than Perth has historically achieved.

What the Iran war petrol price spike has revealed is that this infrastructure, built and maintained at substantial ongoing public cost, was substantially underutilised because the price signal wasn't making transit competitive with driving at the margin. Perth drivers who are paying substantially more for petrol are discovering, or rediscovering, that the train is faster than driving to the CBD in peak hour and that the cost saving at current petrol prices is material.

The Australian state government's announcement of free public transport in April — first confirmed for Victoria and Tasmania, with other states considering similar measures — compounds this price signal shift by making transit not merely more competitive but actually free. For Perth commuters already making the mental shift toward transit, free fares during April eliminate the last marginal financial argument for driving.

The enduring question that urban planners are watching closely is whether the transit habit formed during the high-petrol-price period persists when prices eventually normalise. Commuting behaviour has strong habit persistence — people who establish a transit commuting routine often maintain it beyond the specific conditions that initially motivated the switch.