According to an eye witness in the video shared on Instagram, the delivery guy was riding recklessly on the road.
He might have lost control and entered the truck with speed leading to his untimely death.
Based on the way he is lying on the road, he looks like he broke his leg after he entered the truck.
However, Thedistin.com can not confirm if he dead but there is a possibility that he is dead.
Below is the video