That’s simple. Just do one camera at the beginning, one at the end and you can get average speed by simple math. While it allows you to go above the speed limit

That’s simple. Just do one camera at the beginning, one at the end and you can get average speed by simple math. While it allows you to go above the speed limit, you also have to slow down to “lose” that earned time so at the end it averages back to speed limit. Go ahead and advertise this speed trap well because the more people understand how this works the better.