This visualization displays traffic data over time using a horizon chart, where each band represents a different location and the area encodes the hourly visitor count. The chart compresses the y-axis by layering positive values into colored bands, making it easy to compare patterns across multiple series. Built with D3 v5, it uses d3.nest to group the CSV data, scaleLinear for the y-axis, and an area generator with curveBasis for smooth lines. The data comes from traffic.csv, and the rendering is done with SVG.