UPDATE:
Happy to inform everyone my case is closed and I have been acquitted. I went through the whole shebang of first hearing and represented myself in court (2 separate visits and a big waste of time).
Not only was I, the defendant, acquitted for this ridiculous accusation, the judge says potentially the one at fault may be the opposing driver (the witness).
My next steps is to follow up with the police to see if Careless driving charges will be laid to the opposition after what was determined in court. Police informed me they WILL NOT pursue any charges on accidents exceed 6 months. I was extremely pissed when I heard how carefree this cop was by saying he has no obligations to further investigate an expired case. I will file complaint against the officer if they do not apply the same charges to the opposition (complaint against police in hk...useful right?).
In parallel, I will file a tort claim against the opposition driver for the damages to me (including annual leaves, taxi, study time, etc). Its not a strong tort claim, but its the principle