It’s another one of those Superman Thais who have a safety helmet, but are too cool to wear it, or fasten it on head securely.
The motorcyclist reportedly fell under the wheels of a passing semi truck and had his head run over. Reportedly, the motorcyclist wore the helmet, but it slid off his head when he fell. What good will a helmet do to you if you don’t fasten it?
The motorcyclist’s head shattered, fragments of his skull splattered across the road. The truck fled without anyone making note of its license plate.