YOG's Bus Lane & its implications

Someone asked in the ST Forum why is there a need for the special YOG lanes on some roads /Expressways.

So far, as of today- Sat 24th July, there is no "official" reply.

Strange that YOG buses with Speed Limit of 60kmph are designated to use the "2nd" lanes. Or am I to understand that these YOG Busesspeed limit of 60 kmph have been waived ?

This perhaps, answer indirectly, my observation that Buses and almost all heavy vehicles in S'pore just love to "hog" the 2nd lanes on our Expressways.
Some in fairness, do not "hog". They speed at either the speed lLimt of the Expressway or even higher !

As I have expressed in earlier posting, it is almost always smarter to use the leftmost lane on the Expressway. Yes, you have to signal and overtake the real/honest vans/heavy vehicles from time to time, but in Uniguely Singapore, the usual logic of a Right Hand Drive Traffic Rules will not get you any faster here !