Giant Stop Sign Is Laser-Projected Onto a Sheet of Water




Imagine you’re a truck driver. You’re coming up to a tunnel that might be too low for your truck to fit under, but you’re not sure. Suddenly, a gigantic red stop sign appears to obstruct the road in front of the tunnel entrance, giving you no doubt. Stop!

You’re not going to overlook that explicit warning

What is this sorcery? See the video above to find out more about how this remarkable sign is created with a instantaneously produced sheet of water and — you guessed it — frickin’ lasers

These pop-up stop signs made by light show company Laservision are part of an experiment that’s been taking place in Australia since 2007, successfully preventing semi trucks from suddenly turning into unintended convertibles. This one is in the Sydney Harbour Tunnel, and there are several others installed in the city. Read more…

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