Colin Rosenstiel ) gurgled happily, sounding much like
they were saying :

In both cases, as I understand
it, the guilty vehicle was coming from behind the cyclist. In one
case it was turning left across the end of a cycle lane.

The field of vision in the mirrors on the vehicle is irrelevant in
those cases, then. Rather a different kettle of fish.

No. A vehicle should never impinge on an area of road where is doesn't
know what is already there. A blind spot is no excuse, but an indication
of inadequate mirrors.

Right.

But if the vehicle is in the throes of overtaking the cyclists at the time,
the field of view of the mirrors is irrelevant, because the bloody driver
should KNOW that he's overtaking the cyclists, because he's just seen them
through the windscreen...