LANE SELECTION

Freeway, motorway and roads with speed limit over 80 km/h

(in Western Australia over 90 km/h)

Use any except the rightmost lane.

Stopping is prohibited on such roads, and there is nothing preventing you from driving in the leftmost lane. For driving straight you should use the 1^st lane unless it is congested with traffic, then use the 2^nd lane, etc, but leave the rightmost lane for overtaking.
ARR require this for all roads with speed limit over 80 km/h, whether a freeway or not (r.130); in Western Australia - over 90 km/h (Ref.#14 section 3.4.2, p.52).

Take 2^nd lane if you see ahead vehicles queued waiting to enter the freeway.

Photo: Lanes – 1^st lane is the preferred lane in a road with speed limit over 80 km/h

Photo: Lanes - 1^st lane is the preferred lane in a freeway, “Freeway” sign