A cyclist should avoid trucks' blind spots like the plague. That said
it seems obvious to me that ANY vehicle turning from the wrong lane
and /or not looking before doing so to insure it is not going to crush
a vehicle or pedestrian lawfully on the road is at fault. Period.

There is no "need" to blindly turn a truck where the driver can not
see. If the truck is unable to be driven on the road without doing so
then we should consider the possibility that the truck is not road
worthy in the city environment and smaller more expensive vehicles
should be used.

Do we really want trucks, cars, or bikes driven blindly?

Wayne