An alternative view is:
Truck had right-of-way to turn right since it was on the correct side of the roadway and traveling in the legal direction. Traffic going the opposite way on his side of the road, shouldn't be traveling in an illegal direction and at a minimum, it should yield to right-of-way to vehicles traveling legally. Also, the MC crashed into the rear of the truck indicating most of the truck had passed in front of the MC already, which the MC driver would/should have seen, and should have slammed on the brakes and normally would have avoided the accident, but if its speed was excessive, the time may have been insufficient to brake. Finally, the driver was 14 and didn't have drivers license and shouldn't have been driving a MC. The only potential violation, the truck driver may have committed, was that he didn't signal or signal light wasn't working, but there 's no mention of this matter.