What makes North Dakota different
The schedule runs across seven bands on a road posted at or below the common limit, beginning at nothing for the smallest margins and reaching a figure larger than the threshold itself at the top. A driver reading only the fine has understood the cheaper half of a citation and missed the expensive one entirely.
The practical instruction that follows is simple and unusual: in North Dakota, look at the margin over the limit before looking at the amount. The amount will not tell you whether the licence is at risk, and in this state it frequently is.