This was law for a time (in Victoria) for all motorbikes headlights wired always on through ignition wiring to make the bikes more visible. A side effect of this was if the globe blew you couldn't legally ride anywhere to replace the globe, day or night. It was proven to be a stupid law and dropped.
A new suggestion in Victoria is car headlights on 24x7 whilst being driven. So any motorbikes with headlights on during the day will now disappear into the sea of headlights, again making an optional safety option for riders useless. Motorbikes need to be clearly visible AND heard. High-Vis gear is almost useless and camo gear just plain stupid.
Also, if a car has one or more headlights fail will they be unable to be driven day or night, including on bright sunny days? Will this headlights on 24x7 requirement not only apply to cars, but also motorbike, omnibus, truck, tram, pushbike, tractor, horse with or without cart, etc.?
I'm all for road safety but I remember the motorbike headlight rule, car headlights on in daylight greatly reduced any benefit of headlight flashing and also the old saying - people who drove with headlights on during the day were all idiots and that includes all Volvo drivers.
[EDITED] Missing "?" in para 3 inserted
More and more cars have daylight running lights. I wonder why??????? Maybe it's just a pretty look. Like those seatbelts that people argued would strangle them and trap in their sinking car, …. i doubt you'll ever get fined driving with one out, and doubt there will ever be a law to make it compulsory, that is more a kneejerk reaction.