This video is about a HD Tractor pulling a lowloader against a steep gradient of a slope. Due to the incline and load on the fifth wheel of the tractor, there is no load on the front axle of the tractor making it impossible to steer the transport combination in the right direction.

Finally almost at the end of the slope, the tractor stops and applies the brakes, but these apparently only work on the axles of the tractor and not on the lowloader, which pulls the whole combination down the slope, despite the friction of the rubber tires of the tractor on the road surface