Trailer hump and bump - GIF

Trailer hump and bump.

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Previously:

<div style="display:inline-block; white-space:normal;"><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1618263276_chevy_pickup_towing_trailer_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Pickup truck towing a 53-foot trailer</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17313766432506.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Rapid car towing</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17232493339122.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Towing a boat with your body</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17524379275183.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Towing a massive load on a motorcycle</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1615595909_towing_weight_distribution_demo_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Towing weight distribution demonstration</span></span><span style="display:inline-block; text-align:center; vertical-align:top; width:150px; margin:0 15px 20px 0;"><img src="https://homemadetools-images.s3.amazonaws.com/hmt/1685406613_truck_towing_trucks_cars_thumb.jpg" style="width:150px; height:100px; object-fit:cover;"><br><span style="display:inline-block; height:60px; overflow:hidden;">Truck loaded with cars towing truck loaded with trucks</span></span></div>

He is not wise.

Some lowbed semi-trailers have a height adjustable gooseneck/ hitch, to raise or lower the trailer front end. On level grounds, lowbed trailer trucks with heavy loads, keep the minimum of ground clearance to maintain a low center of gravity. Before crossing train ramps, they raise the trailer front end. The tractor driver in the video, needed a manual height adjustable receiver hitch. He should have raised the front end of the trailer before crossing the ramp.

He took the crossing too fast and lost the tow hitch connection.