Originally Posted by Ohregano
The mirrors are literally one of your essentials. Properly adjusted mirrors on a school bus are invaluable.
IMO and experience, you need to be looking from mirror to mirror very rapidly/often (when backing/maneuvering) and you would need multiple (large) monitors to be able to duplicate that with a camera. I drove a friends 34' motorhome with side cameras (that are 'on' when the blinker is on) and that was ok for 'additional data' when clearing the side to change lanes but not useful (IMO) when backing/maneuvering and certainly not a replacement for good and properly adjusted mirrors.
I drove a friends new SUV the other day and was very surprised at how little I could see (yes, mirrors were adjusted). Much safer backing/maneuvering my 45' coach than that SUV.