Moving Violations Summary for 2013

The Vision Zero data contained in this layer pertain to parking violations issued by the District of Columbia's Metropolitan Police Department (MPD)and partner agencies with the authority to do so. For example, the District Department of Transportation's (DDOT) traffic control officers who prevent congestion through enforcement and control at intersections throughout the District. Locations of moving violations are identified from a database provided by the District Department of Motor Vehicles (DMV). The data is summarized by ticket counts based on time of day, week of year, year, and category of violation. The summary form was created as a series of aggregated street segment data, in order to view spatial patterns on a weekly basis. This is a temporal crosstab of violation types (defined below) by week and time of day (ranges defined below). Users are able to query by week to get a DC-wide yearly and weekly perspective on over 50 different combinations of violations. Create interesting street segment heat maps which can get quite specific to identify patterns and answer questions. For example, what type of parking violations occurred the most in the time period of this data? These data will give up to 26 distinct street segments of information – one for each week of the half year. Important Notes: Records which could not be associated to a street centerline segment were excluded from these summaries. Records which do not have a time of day associated with the violation were excluded from these summaries.本图层所包含的零愿景交通安全计划（Vision Zero）数据，均来自哥伦比亚特区大都会警察局（Metropolitan Police Department, MPD）及具备执法权限的合作机构开具的停车罚单。例如，哥伦比亚特区交通运输局（District Department of Transportation, DDOT）的交通管控警员，负责在全区各路口通过执法与交通管控缓解拥堵。机动车违章的点位信息，则取自哥伦比亚特区机动车管理局（District Department of Motor Vehicles, DMV）提供的数据库。该数据以罚单数量为统计指标，按每日时段、年度周次、年份以及违章类别进行汇总。本次汇总采用聚合后的路段数据格式，以便按周度维度直观展示空间分布特征。其核心为按周次与每日时段（时段范围详见下文）交叉制表的违章类型统计表（违章类型定义详见下文）。用户可通过周次维度进行查询，从特区全域视角获取全年及周度尺度下50余种违章组合的相关信息，还可生成精度可调的路段热力图，以识别交通违章的时空规律并解答相关问题，例如：在本次数据覆盖的时段内，哪类停车违章行为最为频发？本数据集最多可提供半年内每周对应的26条独立路段信息。重要说明：无法关联至道路中心线路段的记录，以及未附带违章发生时段的记录，均已被排除在本次汇总数据之外。