The need for limits on speed is obvious. Let's for a moment look at this from a different angle. There are no speed limits outside the metro areas in the Top End. And they don't use radars as much as we do. Nor does the other vehicle.
Bad attitudes kill and maim at any speed.
Poor training contributes to lack of self-esteem, compensatory overconfidence, and technical incompetence. Every incident happens in a 3-second frame or less. We need speed limits purely to give ourselves room to maneuver unwieldy behemoths in confined spaces. Unfortunately, speed limits are of no use in confrontation with a bad attitude. Without doubt, some lawmakers genuinely and sincerely believe that velocity kills.