Here you have a few pictures I found of vehicles using the Dietz 240, 7-40, 240-1, 7-41.
Seattle, Washington Police Department.
A mix of Federal TwinBeaconRay’s and Dietz 240’s.
Oregon State Police.
New Castle County Police Department, Delaware, I believe.
Unknown Sheriff’s Department where a city police ”meter maid” writing parking tickets on the Sheriff’s cars.
Hopefully a funny joke for the photo but not so uncommon with rivalry between departments. Stupidity!
Michael