Prince George's County police are installing cameras to watch their cameras.
Six speed cameras in Maryland have been vandalized since April, WTOP reported.
The cameras cost $30,000 $100,000 to replace, so police have started installing surveillance cameras designed to catch vandals in the act.
A dozen of the new cameras will be in place by the end of the month, WTOP reported.
Police call it a matter of public safety, not an attempt to generate profit.