Not sure how you'd go in SA as regards to a bike but these dimensions taken from page 37/38 from here
http://www.legislation.sa.gov.au/lz/c/r/road%20traffic%20(vehicle%20standards)%20rules%201999/current/1999.235.un.pdf suggest that it applies to a bike.
However, a pair of daytime running lights fitted to a motor vehicle under
1300 millimetres wide may be fitted with the centre of each light not under
400 millimetres from the centre of the other light.
(4) When on, a daytime running light must:
(a) show a white or yellow light visible from the front of the vehicle; and
(b) not use over 25 watts power.
Noting also that DRL's are at the same height as the main headlights (on a car)
Note—
The third edition ADRs only allow white daytime running lights.
Also this on page 34
(3) A motor bike may be equipped with a headlight modulation system that:
(a) varies the brightness of its high-beam headlight or low-beam headlight, but
not both, at a rate of at least 200 and at most 280 flashes a minute; and
(b) is designed to operate only in the daylight.
The only issue I have with my 1100 and it's lights on all the time is if the alternator fails which I've had on my previous CX500. Only options are to remove globes until you get back home or install a seperate on/off switch.