No it's not, but it would be costly and ultimately it's not really a solution to the problem. As I posted earlier, I as a driver of ANY vehicle, am certainly not going to move on the say-so of a passenger. I want to see for myself that it is safe to manouevre, and if anything happens then it is down to me.
I don't intend to get drawn into yet another long drawn out debate about lorries on the road. When I am driving a lorry, I give cyclist as much space as is practical. When I am on my bike, I keep the feck out of the way of lorries. If others choose to do things differently, then they have to face the consequences.
As Dan said, I would imagine that the role would more likely be to let you know that it was not safe to proceed.
I do have sympathy for the haulage industry, I speak to drivers on an almost daily basis, I regularly speak to transport managers and distributors.
I don't see how the addition of more and more mirrors and cameras makes the job of the drivers any easier, as has been said you can't look in all of them at the same time, but surely there is something that can be done that makes things safer for other road users without having to make things even more fraught for the drivers.
What that is I don't know, the drivers mate, glass panels on the bottom of the doors, out of hours deliveries, hubs for the distribution of goods by smaller vehicles? What I tend to see in these threads however is both the outright poo pooing of any ideas which are aired and the lack of alternative ideas being put forward by the very people that would likely have the best suggestions.