Australian Fence of Sound Halves Roadkill On One Deadly Stretch of Road

Researchers in the Australian state of Tasmania are using a 'virtual fence' system, consisting of alarm units mounted on posts along the side of a three-mile stretch of road, to reduce the number animals that get struck and killed by cars on a particularly deadly stretch of road. 'These alarm units, around 80 feet apart, emit sounds and flashing lights to warn animals when a car is approaching,' reports Digital Trends. 'These do not distract drivers because the sound and light are directed to the edge of the road. They are also only loud and bright enough to be noticeable to wildlife in the immediate vicinity.' From the report: 'The virtual fence technology involves small devices, approximately the size of a mobile phone, mounted on a pole on the side of the road which are triggered by car headlights when they hit a sensor in the device,' Samantha Fox, the researcher who led the project, told Digital Trends. 'This sets off blue and yellow flashing lights and a high pitched siren. These together warn local wildlife that a car is coming, and give the animal time to move away from the road.' Over the course of a three-year trial, the technology has reduced roadkill on one particular road by a massive 50 percent. On this stretch of road alone, this has meant saving the lives of around 200 animals, ranging from wombats to possums.

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