If I didn't know the subject, that would be the most confusing picture I've seen today.
www.amazon.com/Clinical-Photography-publication-Eastman-Company...
I believe it was chapter 5 that was on Psychological Clarity. It's more than just context.
Ontopically, have you considered the difference between a Roman and Gothic arch? A Gothic curve in plan would jackknife really well. And act as a vortex trap.
For the tow vehicle, rudders at the two rear corners could be connected by a 4-bar linkage to the trailer's tongue [else electric microcontroller] to dodge the front corner of the trailer.