Everybody else but me at the green-rubbish dump used to reverse a trailer-load as straight as an arrow. No amount of practice made me any better over the years, so I avoided busy times.
Recently I found two relevant WWW areas while browsing.
The first was a jungle of legal and illegal
sites devoted to exploiting the huge potential of the Lego intelligent brick robot-designing toy.
One of the hundreds of robots developed was a model of an auto-reversing car and trailer unit. It was capable of maintaining in reverse a pre-set curved track or a pre-set straight track. This simple task involves I learned, some very complex algorithms.
The second site was a Belgian one which reported on the varying successes achieved by attempts to automate the final stages of coupling and decoupling juggernaut road train units. [They dont float as when assembling a space-station or linking a tug and tanker.]
So I searched but couldnt find an intermediate stage between the two extremes, juggernauts snorting and roaring as they automate in a transport yard and a model robot unit whirring backwards on a hobbyists table-top.
This in-berween stage would be a consumer product enabling duffers like me to
automatically reverse-steer a rubbish trailer or something larger the way an expert does.
If it exists already someone will know. And come to think of it, who needs one anyway in these times when everybody and his dog drives a huge 4wd truck and never needs a trailer?