Once per drive? Agree that's fine. Or once every time you cross from 64 to 65 in a 55 and from 74 to 75 in a 65 (which is how I read it)? That's getting turned

Once per drive? Agree that's fine. Or once every time you cross from 64 to 65 in a 55 and from 74 to 75 in a 65 (which is how I read it)? That's getting turned off/disabled (or may perversely encourage drivers to vary their speed from 78-82 instead of 74-78).