Accessibility - Sound-enhanced pedestrian crossings

State of play of pedestrian crossings for PRM (pedestrian crossings and lowered sidewalks) according to the regulatory technical requirements related to accessibility (width of passage, percentage of slope, wake-up devices, obstacles encountered, sound lights ...). Each crossing is affected by a level of accessibility for the motor impaired, visual, and any disability. The dot layer is generated by a polyline input layer that represents the layout of pedestrian crossings or pedestrian crossings, digitized by recognition of 2014 aerial photography and field observations. Each point is located at the centroid of a line. Attributes were provided through field observations and surveys. The levels of disability were determined at the discretion of the road technician according to the characteristics noted.本数据集依据无障碍相关监管技术要求（涵盖通行宽度、坡度占比、唤醒装置、沿途障碍物、声光提示装置等），对PRM（行人过街横道与降坡人行道，pedestrian crossings and lowered sidewalks）的现状概况进行整理。每一处过街设施均针对行动障碍、视觉障碍及其他各类残障群体设置了对应的无障碍等级。该点状图层由表征行人过街设施布局的折线输入图层生成，通过识别2014年航空影像并结合实地观测完成数字化处理。每个点位均位于对应线段的质心位置。设施的属性信息通过实地观测与调研获取。残障群体无障碍等级由道路技术人员结合现场记录的特征参数自主判定。