While i’m a transport enthusiast too, some buses in Perth has Nine News advertisement on it.
Some may only have the billboard on its right side, while others at the rear but are placed not level with the bus.
Photographed With: Samsung Galaxy Mega (GT-I9152)
I’ve also seen some OC500LE’s having MAFS AU as their rear ad too before but that has been replaced. Here is the clip of one of the buses with it.