Heavy Vehicle (Vehicle Standards) National Regulation (NSW)

Glazing used in a windscreen of a heavy motor vehicle must have a luminous transmittance of at least 70%.

Glazing used in a windscreen of a heavy motor vehicle must not be coated in a way that reduces its luminous transmittance.

However, subsections (1) and (2) do not apply to the greater of the following areas of a windscreen—

the area above the highest point of the windscreen that is swept by a windscreen wiper;

the upper 10% of the windscreen.

Glazing used in a window or interior partition of a heavy motor vehicle must have a luminous transmittance of at least 70%.

Glazing used in a window or interior partition of a heavy motor vehicle, other than rear glazing, may be coated to achieve a luminous transmittance of not less than 35%.

A heavy motor vehicle’s rear glazing may be coated to achieve a luminous transmittance of 0% or more.

The requirements about luminous transmittance applying to glazing used in a window of a heavy motor vehicle stated in a second edition ADR or third edition ADR do not apply to a window that has been coated as provided in subsection (5) or (5A).

Glazing used in a windscreen, window or interior partition of a heavy motor vehicle that has been coated to reduce its luminous transmittance must not have a reflectance of more than 10%.

In this section—

glazing—

means material that may be used in a windscreen, window or interior partition of a heavy motor vehicle, through which the vehicle’s driver can see the road; but

does not include a coating added after manufacture of the material.

luminous transmittance, for glazing or a coating on glazing, means the amount of light that can pass through the glazing as a percentage of the amount of light that would be transmitted if the glazing or coating were absent.

rear glazing, for a heavy motor vehicle, means glazing used in a window or interior partition of the heavy motor vehicle located behind the driver in the normal driving position.