Metropolitan Adelaide Transport Study

The Metropolitan Adelaide Transport Study, or "MATS Plan" as it became known, was a comprehensive transport plan released in 1968 proposing a number of road and rail transport projects for the metropolitan area of Adelaide, South Australia. It recommended the construction of 98 kilometres (61 miles) of freeways, 34 kilometres (21 miles) of expressway and the widening of 386 kilometres (240 miles) of existing arterial roads.

Source: Wikipedia — Metropolitan Adelaide Transport Study (CC BY-SA 4.0)