Officers can program the units to alert them when they detect a certain license-plate number, Branch said.
The City of Plattsburgh Common Council approved the project at its March 14 meeting. Contractors will be hired to excavate, set tubes, pour concrete and backfill for construction of the pole on which the cameras will be mounted, according to the meeting minutes.
A state-licensed engineer drafted a plan for the camera poles, and the Plattsburgh Municipal Lighting Department will be working on the project, Branch said.
City Police are working on getting a permit from the U.S. Department of Transportation so the cameras can be installed on the interstate.
The federal program will directly pay ELSAG North America and the construction companies working on the installation, Branch said.
Plattsburgh Police say they have benefited from a different kind of camera that's already in the city. Several surveillance devices monitor the downtown area, Branch said.
Footage from those cameras was used, for example, to collect evidence on Dustin C. Hill, who strangled Jason M. Larabie to death near the Saranac River boat launch on Green Street in August 2011.
Surveillance footage is a good tool to "weed out the truth from the lies or inaccurate memory" of suspects or witnesses, Branch said.
City Police hope the new cameras will give them a valuable new source of information about potential criminals, either local or foreign, who are traveling in the area.
"Technology like that is great."
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