Looking at the image, whoever put those signs didn't had the slightest clue on what they were doing.
You need the information concentrated in an easy to read and perceive cluster; best placement here would be at the center panel. Visual signs of danger should have been placed on the sides, as visual information is processed faster.
I get mad at bad safety communication. Who gives a shit it’s a work vehicle? Just write “keep your distance, frequent stops and turns”. A placard with a symbol showing distance between vehicles and it would be even better.