New TfL's HGV's can't see you for s*** poster

The poster also fails because if the lorry has properly fitted mirrors at most 3 of the cyclists may be in a 'blind spot'. All of the cyclists would have had moved through fields of vision or have been there before the lorry arrived. In that situation the driver must know they are there unless he has been on his phone or reading the paper etc. (or failed the eyesight test!)

I suspect that the aim is to get cyclists to think about where the blind spot of a large vehicle is and to try not to put themselves there (which obviously differs from being put there by the driver). Yes, all of the cyclist realistically would have had to move through the field of vision to get there, but that doesn't automatically mean that the driver has seen them. A cyclist could move from the field of vision into a blind spot without the driver realising it. Afterall, a HGV driver might be looking somewhere other than at his mirrors before making a manouver from a junction. In fact I would be rather worried if he was looking at his mirrors while pulling out into a junction. There are more things to look at from the cab of a HGV than just mirrors, paper, phone. The time required to move from the field of vision into a blind spot could be as little as half a second. Cyclists should be managing their own risk as well.

That's quite a weak criticislm.

Maybe the poster should say "keep these lorries off London's cycle routes"

Is it realistic to expect this of HGV drivers when London's cycle routes are placed on major arterial roads? Drivers don't own the roads, and neither do cyclists.