The OSM Global Noise Pollution Map uses OpenStreetMap information to map the levels of dissonance pollution across the world. At the centre of the OSM Global Noise Pollution Map is the really clever simply elementary stance of assigning dissonance pollution levels based on OpenStreetMap tags.
Map features inwards OpenStreetMap are assigned a tag to pull what has been mapped. These tags tin besides hold upwards assigned a value. For event all roads are tagged every bit a 'highway' simply are besides assigned a value such every bit 'motorway', 'secondary' or 'residential;.
The OSM Global Noise Pollution Map purpose these tags together with values to assign a dissonance pollution marking based on full general assumptions. For event highway, trunk, brain together with secondary roads are deemed to hold upwards noisier than normal street or service roads. The OSM Global Noise Pollution Map besides assumes that railways together with retail & industrial zones volition besides bring a marking of dissonance pollution associated amongst them.
Such a blanket approach champaign has its limits. Looking at the map to a greater extent than or less where I alive inwards London I'd grip amongst the bulk of the dissonance levels simply at that spot are ane or ii buildings which definitely aren't every bit noisy every bit the map suggests.
However, quibbles aside, this is a smashing stance together with I'm certain that it tin hold upwards refined further. For event at that spot are a lot of dissimilar types of retail outlet tags inwards OpenStreetMap, together with hence at that spot is peradventure room to refine the levels of dissonance pollution assigned to each type of store together with store on the global map.
