Charanmafiriayls - what you have said is ridiculous that being shaken violently for 30 seconds is not assault - maybe you should check your dictionary? Remember he also went to punch him.
Remember that expat was provoked by the local driver when he was just about injured in an accident caused by illegal and dangerous driving.
Yes expat may be charged with behaving incorrectly but the only reason no charge might be laid against the other person is because he was a local and not that it isnt against the law for a local to act in this way.
Since you seem to think you have a grasp on the local law - is it legally acceptable for people to assault someone here. I think you will find its not.

I am not going to enter into further discussion with you on this one - I don't think you have a bloody clue what your talking about.