the city. The latter devices collect multiple data: from air quality, noise or temperature to which parking lots are free or occupied on different streets or when it is necessary to water a particular park or garden. For example, buses have sensors at the top that allow to know the level of pollution in different areas of the city. They have also been installed on street lamps and walls inside small white boxes in order to measure noise, temperature or brightness. Multiple devices installed on the ground monitor how many cars are parked in certain streets while different information panels indicate the free places in a given area to park the car. Even paper containers and containers have volumetric measurement sensors that indicate how full they are. This information is especially valuable when planning collection routes, which may vary according to needs. As garbage trucks are also intelligent, it is possible to monitor their travel and activity.