The motorcyclist and his pillion passenger pulled out from a side road, near where they lived, and were hit by a passing motorist. It's not known what speed the motorist was travelling at but, of course, this may have been a factor in him being unable to avoid the accident, although it's a national speed limit road.
It sounds like he was unable to avoid the accident even if he was travelling at a legal speed.
The relatives might perhaps be better advised paying a little more attention to the safety of their kin rather than any other factors involved here.
For instance, neither the rider or pillion passenger were wearing helmets or any form of protective clothing, but then, perhaps they were unaware of this necessity.
The rider was 12 years old, the pillion passenger just 3.