Parking Violations Summary for 2015 - Weeks 27 to 52

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（Vision Zero）数据集，涵盖由哥伦比亚特区大都会警察局（Metropolitan Police Department, MPD）及具备相应执法权限的合作机构开具的停车违章罚单。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，负责在全区各交叉口通过执法与管控缓解交通拥堵。移动交通违章的点位信息源自哥伦比亚特区机动车管理局（Department of Motor Vehicles, DMV）提供的数据库。本数据集依据每日时段、年度周次、年份及违章类别，对罚单数量进行统计汇总。为便于按周度视角分析空间分布规律，本次汇总采用聚合后的街道路段数据形式构建。本数据集为按周度与每日时段划分的违章类型（定义见下文）的时间交叉表，时段划分规则详见下文。用户可按周度进行查询，从而获取覆盖哥伦比亚特区全域的年度及周度违章分析视角，涵盖超过50种不同的违章组合类型。可生成精准度极高的街道路段热力图，用于识别违章分布规律并解答相关疑问，例如：本数据集涵盖的时段内，哪种停车违章行为最为频发？本数据集最多可提供26条独立街道路段的信息，对应半年度内的每一周。重要说明：无法关联至街道中心线路段的记录，以及未附带违章发生时段的记录，均已从本次汇总数据中剔除。