Speed cameras on the A596 at Wigton were damaged overnight on Christmas Eve.
Police are investigating after the cameras had their metal casing cut and left on the ground.
The incident is believed to have occurred at a time between Christmas Eve and 7am on Christmas Day.
Police are appealing for anyone with any information to call PC 2635 Jefferson on 101 or Crimestoppers anonymously on 0800 555 111.
