Traffic Regulations, Schedule 3 - Australian Road Rules 1999

(1) A driver must not unreasonably obstruct the path of another driver or a pedestrian.

Offence provision.

Note

Driver includes a person in control of a vehicle – see the definition of drive in the dictionary.

(2) For this rule, a driver does not unreasonably obstruct the path of another driver or a pedestrian only because:

(b) the driver is driving more slowly than other vehicles (unless the driver is driving abnormally slowly in the circumstances).

Example of a driver driving abnormally slowly

A driver driving at a speed of 20 kilometres per hour on a length of road to which a speed-limit of 80 kilometres per hour applies when there is no reason for the driver to drive at that speed on the length of road.