It would be a good idea to use better standards for noise pollution than helicopters and airplanes of today. Perhaps like this - Life in the Spanish City that

It would be a good idea to use better standards for noise pollution than helicopters and airplanes of today. Perhaps like this - Life in the Spanish City that banned cars. https://www.theguardian.com/cities/2018/sep/18/paradise-life-spanish-city-banned-cars-pontevedra https://www.theguardian.com/cities/2018/sep/18/paradise-life... This is about how much noise your aircraft are allowed to create. What you should be able to hear in the street are the tweeting of birds in the camellias, the tinkle of coffee spoons and the sound of human voices.