Pedestrian Network Coverage Ratio

Sidewalk coverage percentages along road segments by combining road network data from Overture Maps (2025) with pedestrian infrastructure (2020) The sw_ratio field provides a normalized metric for sidewalk coverage: Calculation: Average of both side coverage ratios: (side1_length/seg_length + side2_length/seg_length) / 2 Range: 0.0 (no sidewalk) to 1.0 (complete coverage on both sides) Capped: Values are capped at 1.0 even if measured sidewalk lengths exceed segment length due to measurement overlaps See https://github.com/dvrpc/gis-sw-coverage for detailed methodology本数据集通过整合Overture Maps（2025）发布的道路网络数据与2020年步行基础设施数据，计算得到各道路路段的人行道覆盖率百分比。其中sw_ratio字段为人行道覆盖情况的归一化指标，计算公式为两侧人行道覆盖占比的平均值：(side1_length/seg_length + side2_length/seg_length)/2。该指标的取值范围为0.0（无任何人行道覆盖）至1.0（两侧人行道完全覆盖）。数据设置了封顶规则：若因测量重叠导致实测人行道总长度超过路段长度，最终取值仍将被限制为1.0。详细方法论可参考：https://github.com/dvrpc/gis-sw-coverage