This visualization uses a stacked bar chart to show counts of pedestrians, non-motorized vehicles, and motor vehicles across six lane IDs (0-5) at a northern entrance. The chart displays the data with each lane as a category on the x-axis and the stacked categories as colored segments, with a legend below. The implementation uses D3 v6 in a React framework, rendering SVG elements. The code employs `d3.stack` to create the stacked series, `d3.scaleBand` for the categorical x-axis, `d3.scaleLinear` for the y-axis, and `d3.scaleOrdinal` with `d3.schemeSet3` for colors. Data is hardcoded in the `naiveData` array, and axes are drawn using `d3.axisLeft` and `d3.axisBottom`.