Western Australian Consolidated Regulations

ROAD TRAFFIC (VEHICLE STANDARDS) RULES 2002 - REG 110

110 .         Operation and performance of warning lights

        (1)         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.

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

        (3)         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.

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

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

        (6)         A warning light must have —

            (a)         an effective lit lens area of at least 60 cm ² ; and

            (b)         a luminous intensity (in candela) of at least the values mentioned in Table 1 when measured at the angles mentioned in the Table.

Table 1

Vertical angle from centre of light		Horizontal angle from centre of light
	-30°		-20°	-10°	-5°	0°	5°	10°	20°	30°
10º					50	80	50
5º			180	320	350	450	350	320	180
0º	75		450	1000	1250	1500	1250	1000	450	75
-5º	40		270	450	570	600	570	450	270	40
-10º					75	75	75

        (7)         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.