If a driver is overtaking another driver on a two-way road by crossing a dividing line, or crossing to the right of the centre of the road, the other driver must not increase the speed at which the driver is driving until the first driver –

(a) has passed the other driver; and

(b) has returned to the marked lane or line of traffic where the other driver is driving; and

(c) is a sufficient distance in front of the other driver to avoid a collision.

Penalty:  Fine not exceeding 10 penalty units.

Note Centre of the road , dividing line , marked lane , overtake and two-way road are defined in the dictionary.