This example visualizes municipal waste segregation data for three lanes in Mumbai, overlaying lane polygons on a map with a dark fill and white borders. The map uses `d3.geoMercator` projection and `d3.geoPath` to render GeoJSON features from `dummy_lane_polygon_swk.json`. A related CSV file `dummytracksheet.csv` provides daily tracking metrics such as houses reached and dry/wet waste amounts, though the visible code loads the data without drawing the linkage lines. The visualization is built with D3 v4 and React, rendering to an SVG element.