This stacked bar chart displays the count of pedestrians, non-motorized vehicles, and motor vehicles at a single crosswalk location (ID 0), with each category represented by a colored segment in the bar. The visualization uses D3.js v6 within an SVG canvas, employing the `d3.stack` and `d3.scaleBand` APIs to compute and position the stacked segments, while a CSS-based legend, built with `d3.select` and `.enter()`, identifies the three categories. The data is hardcoded in the index.html file, and the chart renders with labeled axes and a fixed 1600x800 viewport.