REVEALED: The little-known traffic light system that has left Sydneysiders stunned and changed the way they drive FOREVER TikTok users stuns Sydney drivers with little known traffic light system fact The TikToker penned the catchy jingle revealing sensors detect cars on the road Song shows users the best way to make traffic lights turn green at intersections Social media users were left stunned when they found out little known fact
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Sydney drivers have been left stunned after discovering a little known traffic light trick.
In a video uploaded to TikTok by Bennymofodavis on Friday, it was revealed Sydney traffic lights change colour because a sensor beneath the road which detects the vehicle.
'Hey drivers on the road, these lines that you can see, are electro-magnetic sensors apparently,' the video begins.