I noticed in Maryland, that MULTIPLE speed cameras are now being deployed IN SERIES to ticket drivers who slow down just before known speed cameras and speed up after them.

For example, my 9500ix has in its database a known fixed and/or semi-permanent speed camera. But the locality has now begun setting up semi-permanent speed cameras about 1000 feet prior to that known camera and 1000 feet after it to try to ticket those who slow down before and speed up after it. The semi-permanent cameras are more hidden than the fixed/marked one.