Motor Vehicles (Standards) Regulations - Australian Vehicle Standards Rules

When operating, a warning light must display regular flashes of yellow light at a rate of at least 90, and not over 180, flashes a minute.

The warning lights at the same end of the bus must flash alternately.

Unless the driver has turned the warning lights off, they must operate automatically when a door on the bus opens and for at least

10, and not over 20, seconds after all the doors on the bus have closed.

The bus must have a visible or audible signal that tells the driver when the warning lights are operating.

The bus must be fitted with a switch that allows the driver to turn the warning lights off.

A warning light must have:

an effective lit lens area of at least 60 square centimetres; and

a luminous intensity (in candela) of at least the values mentioned in the following table when measured at the angles mentioned in the table.

For subrule (6)(b), the luminous intensity of a light is to be measured in accordance with the test method mentioned in third edition ADR 6.