As an immigrant (I immigrated to Hong Kong)，I disagree when It comes to road safety. I believe that it's the responsibility of every driver to learn the differences when driving and until then practice safe defensive driving.

I agree with you that it takes a while to adapt to new sociale mores and it's worth cutting immigrants some slack but that's different from driving a multi-ton heap of metal where safety is important.

Sidenote: Of the different cities I've lived in Asia, HK drivers are some of the worst. Combination of aggressive driving with refusal to signal their attention (by using their turn signal) makes for very poor driving. Not everyone but a significant percentage.