Skip to content
Planform Development Group

Case Study · Township Development

Corridor Economies

What an illustrative study of a 16 kilometre township arterial reveals about the relationship between movement, trade and public infrastructure.

Published
December 2025
Reading time
10 min
Format
Case Study
Topic
Township Development

Township arterials concentrate an extraordinary volume of economic activity on infrastructure that was designed only to move vehicles. Trade, transport interchange, waiting, and services accumulate wherever passengers change mode.

Observed behaviour

Trading density correlates almost exactly with interchange volume, not with proximity to residential density. The corridor is an economy of transfer, and its infrastructure should be designed as such.

A repeatable kit

Because the behaviour repeats, the intervention can repeat. A standard node — layby, shaded trading bays, water, ablution, waste, lighting, square — can be designed once and calibrated by volume, at a fraction of the cost of nine bespoke projects.

Tenure first

The determining risk is not construction. It is whether the traders currently occupying the space retain it after it is improved. Where they do not, the improvement destroys the economy it was intended to support.

Research

Continue reading.

Our published research programme tracks urbanisation, housing economics, infrastructure and climate adaptation.