Australia generally follows EU for vehicle safety regs, and red turn signals were banned for new vehicles in 1973.

I wish. Never used to really see any until recently. Looks like a brake light malfunction if you're not expecting it.

Never see this in China and didn't know it exists before.

We do see them here occasionally on US import cars. (NL) Tend to be older models like those long and wide models with benches in front and back and very loose suspension.

Here in the UK, older cars are often exempt from various safety standards. Otherwise, recent imported vehicles have to comply with e.g. headlights dipping the wrong way which is common as we drive on the left.