Land Transport (Road User) Rule 2004

This clause applies if a driver is at or approaching a portion of a roadway where the road controlling authority has, in accordance with any enactment, marked a no-passing line applying to traffic moving in the direction in which the driver is moving.

The driver must not pass or attempt to pass a motor vehicle or an animal-drawn vehicle moving in the same direction within the length of roadway on which the no-passing line is marked until the driver reaches the further end of the no-passing line, unless throughout the passing movement the driver keeps the vehicle wholly to the left of the no-passing line.