So... they have fines for underspeeding... measured via entry and exit? So every time I go to have a bite to eat, I will be fined for underspeeding?

As long as they do what they promise, I don't mind. Besides. Those areas without streetlights where the speed cameras won't work? That describes the entire stretch of the South Superhighway from San Pedro to the end... with just small islands of light near the exits.