Spez can eat my ass in hell if he thinks he’s getting any more of my info.

“You want to seek out new life and new civilizations? Well THERE. IT. SITS!”

A quick search for “traffic sensor” returns a whole class of items that all basically look like the rectangular brick in your photo. Supported by the temporary / construction look of the one in the other comment.

Construction company puts in a lane restriction or other traffic modification, plop down a traffic sensor to make sure cars are still flowing through properly.