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South Korea's Road Cleaners

This is a pretty cool invention that can be found in South Korea, but only if you know where to look. Some of the country's roads have sprayers installed into the road reflectors. The reflectors spray water onto the roads to clean them and rid them of dirt and debris. They're also used during the winter months to help keep the roads free of ice, which might just be more of a reason to install them than simply cleaning streets.

concretecivil.com

This seems like a potentially life-saving idea that could be easily implemented in the U.S. if just more people knew something like this existed, especially in states that get a lot of snow.