I was engineering inspector on a fairly small, $2m, road job. My boss (construction manager) kept saying we had to widen some radii at an intersection. I showed him the plans, which showed a light gray line that he said was proposed Edge of pavement; I said it was existing EP. He got mad at me and said "fine, go ask our design engineer". Needless to say I was dreading it, after all I'm just the field guy.
I walk next door to our design engineer (actual PE, not just a cad tech) who zooms in, turns couple layers on, and color; and he says it's existing EP, no widening needes. Then he calls his cad tech in, and he asks ME if that's reasonable, clear, and doable in the field. I was just about shocked that the engineer wanted to know if they made the plans easy to read and buildable. Even asked if there was a better way to show it.
I've had other cases where a PE got personally offended that we would question there design.