Cameras have been burned down on roads across the Borders
Fire attacks have destroyed a total of 18 safety cameras in the Scottish Borders in the past five years.
The latest incident came on Tuesday at about 0500 BST on the A1 near Eyemouth when the speed recording device was reported to be well alight.
Firefighters were called to the scene but the camera was destroyed.
Lothian and Borders Safety Camera Partnership manager Colin McNeill described the latest attack as "extremely disappointing".
The Scottish Borders has seen the vast majority of the attacks in the area covered by the organisation.
Since 2004 there have been 18 incidents recorded in the region compared with just one in Edinburgh over the same time period.
Cameras on the A68, A1 and the A697 in Berwickshire have all been targeted.
Mr McNeill said they hoped to catch the people who started the latest fire.
"The recent act of vandalism was extremely disappointing and will be the subject of a police investigation," he said.
"Safety cameras are located where there is a history of speeding and collisions, where a camera is removed through the selfish act of vandalism it can pose a threat to the safety of other road users.
"This type of action benefits no-one."