This stacked bar chart visualizes traffic volume at the west entrance of Road 1115, broken down by lane and user type (pedestrians, non-motorized vehicles, and motor vehicles). The SVG rendering uses d3.stack to create the layered segments, with d3.scaleBand for lane positioning, d3.scaleLinear for the y-axis, and d3.scaleOrdinal with the schemeSet3 color palette. Each lane’s stacked segments show the proportional counts of three transportation modes, using d3.axisLeft and d3.axisBottom to display the scales.