Small incidents can occur even on agricultural land.
As you can see, the operators of these machines do not know a few basic things. The first would be that you have to be very careful when braking on a hill and it is wet.
And also the trailer up higher than the harvester on a hill, and filling into the high side of the trailer, dosn’t make sense. Harvester man should be at fault here for putting the trailer man in that position.