Where we work defines how we get there (and explains a lot about the public transport challenge)

Where we work has everything to do with the transport choices available to us for getting there. For CBD and inner-city workers, transport choices are amongst the widest – including a variety of forms of public transport (ferries, buses, trains) along with more options for walking and cycling (thanks to the infrastructure but also because CBD and inner city workers tend to live close to the inner city).

If almost everyone worked in the CBDs and inner cities, the fantasy of public transport advocates (“we must get people out of cars and onto public transport”) could be realised. But the economic reality is that the proportion and number of jobs in CBDs and inner cities remains low and is likely to fall further in the future. The greatest majority of jobs are suburban, and these workplaces are typically not served by public transport.

Evidence of this economic reality is provided by the Census, for those who can be bothered to consult the data.

The graph below shows total job numbers for Southeast Queensland by location based on the Census results of 2011, 2016 and 2021. This is for all jobs – part time, casual and full time, and for all industries.

In 2021, Brisbane’s CBD was home to 146,393 jobs. In the 10 years since 2011, this had grown by 30,261 jobs (part time, casual and full time remember -  full time white collar professionals are a subset of this number). The inner city reached 235,441 jobs or growth of 49,067 since 2011 while the SA4 statistical area (very crudely approximating a 5 klm radius from the CBD) reached 364,268 jobs and growth of 77,488 jobs.

The greater Brisbane metro region by comparison was home to 1,194,277 jobs – an increase of 268,888 jobs since 2011. The SEQ region – which forms the basis of most planning frameworks – reached a total jobs pool of 1,702,408 or a decade increase of 481,896.

What this indicates is that the CBD and inner city are overall a minority destination for the 1.7 million employed in SEQ. Yes, the CBD/inner city is the largest single job agglomeration, but in terms of its overall share of jobs by location, we are talking a destination for a minority of the region’s employed. The CBD accounts for 8.5% of jobs in the region, the inner city for 14% and the wider 5klm ring (for which there seems no scientific or professional basis other than it’s a popular measure) for 21%. Even at the most generous spatial definition (a 5klm radius is a 10klm diameter - which stretches well into leafy suburban areas) there are 8 in 10 people who do not work in the inner city.

This lies at the root of the public transport challenge. The hub and spoke nature of public transport (which tends to serve the CBD and inner city) works for only around 10% to 15% of people with inner city or CBD jobs to go to. Increasing investment in public transport networks which reinforce this hub and spoke structure will not increase the proportion for whom PT is a legitimate choice (though it will no doubt add to the amenity and comfort of those for whom it already is).

Adding to the challenge is that, despite decades of adulation and the bestowment of almost mythical job creation and attraction powers, CBDs and inner cities are not growing as fast as job markets in metro and suburban regions. Technology (and now WFH) is eroding the numbers of jobs in inner city locations, while much faster jobs growth in health and education industries are fuelling significant job growth in suburban and outer areas. Finance and property was once (in the 1990s) in the top 5 growth industries. It is now bottom 5. Health and education lead growth on almost any indicator you care to consult.

Another way of looking at this is by what shares of jobs growth are going where. Over the ten-year period to 2021, the Brisbane CBD secured 6% of regional jobs growth and the inner city 10%. Metro Brisbane (for which read suburban business districts, strip centres, shopping centres and other locations) accounted for more than half.