Which of the following IoT-powered 'smart highway' features has been successfully implemented and is currently operational on public roads?

The transportation industry is being revolutionized by Internet of Things (IoT) technologies that are making our roads and highways smarter than ever before. From traffic management to safety features, IoT is transforming how we travel. Test your knowledge about cutting-edge IoT implementations in transportation infrastructure that are already operating in various parts of the world.

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Solar-powered glow-in-the-dark road markings that eliminate the need for street lighting
Roads that automatically melt snow and ice using geothermal energy harvesting systems
Dynamic road surfaces that can change lane configurations based on real-time traffic patterns
Self-healing asphalt that uses embedded nanobots to automatically repair cracks and potholes