A video from a news report about Canadian based SideTrack Technologies' LED display system on the Heathrow Express train service. Sixty individual LED bars have been installed along a 450m stretch of tunnel between the Heathrow Airport and London's Paddington station, creating a display nearly half-a-kilometer in length. By syncing the images to the speed of the train, it creates a flip book effect and the illusion of motion. The system will provide advertisers with the ability to deliver a 15-second advertisement which lights up the dark tunnel walls as the trains pass the display at speeds of around 60 mph.
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