If (and it's a big if) the driver looks left before pulling left they may well see a floating green image on the road next to them.
They are much more likely to look left than they are to check their 7-8 O'Clock, where the soon to be moved in on cyclist will be coming from.
It's often behind the C-pillar, and a wing-mirror blind spot, so you can only check it properly by turning round to look- which being a safety conscious chap I do, but not everyone does.
If (and it's a big if) the driver looks left before pulling left they may well see a floating green image on the road next to them.
They are much more likely to look left than they are to check their 7-8 O'Clock, where the soon to be moved in on cyclist will be coming from.
It's often behind the C-pillar, and a wing-mirror blind spot, so you can only check it properly by turning round to look- which being a safety conscious chap I do, but not everyone does.