What makes New Jersey different
The second New Jersey peculiarity is how often the fine doubles. The statute doubles it for a large enough margin over the limit, doubles it again in a zone posted at the higher interstate limit, and doubles it in a construction zone or a designated Safe Corridor. These are separate provisions rather than one zone rule, and they attach to where the stop happened as much as to how fast the car was going.
What New Jersey does not have is a way out through a course. There is no statewide election that withholds points or dismisses a speeding citation on completion of driver improvement, which is why this page shows traffic school as unavailable and why the realistic decision here is between paying and contesting.