Disconnecting brake and electric lines from yard tractors and connecting them to semi-trailer and chassis happens 6 billion times annually in 10 million tractor-trailers around the world.
To move these trailers, truck drivers manually connect pressurized brake lines to trailers. That releases the parking brake, allowing trailers to move around the yard. Getting in and out of yard trucks that transition trailers from dock doors to parking spots to public roads is constant.
There’s a robot for thatN...
https://www.freightwaves.com/news/outrider-puts-the-robotic-arm-to-autonomous-yard-trucks