According to the Smart City Tracker 2018 report by Navigant Research (https://www.navigantresearch.com/news-and-views/navigant-research-identifies-355-smart-city-projects-in-221-cities-around-the-world) over 221 cities worldwide implemented at least one smart city project in 2018. The city of Chicago, for instance, implemented the Array of Things project that resulted in the installation of over 500 multifunctional sensors on lampposts within the city. Sensors measure temperature, barometric pressure, light, vibration, carbon monoxide, nitrogen dioxide, sulfur dioxide, ozone, ambient sound intensity, pedestrian and vehicle traffic, and surface temperature (source: https://arrayofthings.github.io/faq.html ...
Smart cities spread across the globe
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