Cyclists stay back! stickers

^
Repped

I've searched this thread and it doesn't look like this one has been mentioned (forgive me if it has)

I saw a truck today with two stickers, the one on the left had an arrow pointing left
'cyclist suicide'
And then one on the right, pointing right
'cyclist safe side'

Feel quite angry about this - as though it is the cyclist at fault if they find themselves on the inside and the driver is completely devoid of responsibility. Grrrr.

It's raises a question: When is a cyclist (at least partly) responsible for going down the left of a large vehicle that has bright orange lights flashing telling the world they're turning left when the vehicle gets to the junction before the cyclist?