PG county added a speed camera on Prospect Hill RD, Glenn Dale, MD for west bound in 40mph zone since December 4, 2024. Thank you very much for your help!
This is not on the list of Speed Cameras in PG Co. See here https://data.princegeorgescountymd.gov/Community/Map-of-Speed-Cameras/u7td-kf38
This may be a moveable speed camera as PG Co is known to move these around frequently. This would be better reported as “Police” when its there via the hazard button in waze, as it doesn’t seem to be a permeant fixture at least according to the PG Co. website.