Heavy Vehicle (Mass, Dimension and Loading) National Regulation (NSW)

An agricultural vehicle or agricultural combination wider than 3.7m but not wider than 4.5m must be accompanied by at least 1 pilot vehicle if—

any part of the terrain in which it is being used limits a clear view of approaching traffic to less than 500m; or

it is being used on a major road.

An agricultural vehicle or agricultural combination wider than 4.5m—

must be accompanied by at least 1 pilot vehicle unless paragraph (b) applies; and

must be accompanied by at least 2 pilot vehicles if—

any part of the terrain in which it is being used limits a clear view of approaching traffic to less than 500m; or

it is being used on a major road.

Despite subsections (1) and (2), an agricultural vehicle or agricultural combination does not have to be accompanied by a pilot vehicle if it is travelling less than 500m.