Firstly - my sympathy to the families of the deceased. It is sad to see people die unneccesarily.
Now this :
As a precaution, the company has initiated immediate mechanical checks for all the other 28-seater buses in its fleet.
May I suggest the company does some driver training. The average bus driver in Hong Kong suffers from a pathetic level of inability.
Better yet - replace them with women. I have had the pleasure of being in a few buses driven by women recently and the difference was phenomenal. Quiet, non agressive, smooth, paced with traffic etc etc.
Same goes for taxi drivers.