Parking Violations Summary for 2010 - 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（Vision Zero）数据集，涵盖美国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记录。例如，特区交通运输局（District Department of Transportation, DDOT）的交通管控警员，他们通过在特区全境各路口开展执法与管控工作以缓解交通拥堵。移动交通违章的点位信息，源自特区机动车辆管理局（District Department of Motor Vehicles, DMV）提供的数据库。该数据集依据违章发生时段、年度周次、年份以及违章类别，对罚单数量进行统计汇总。为支持按周检视空间分布特征，统计结果以聚合后的街道段数据形式生成，本质为按周与时段（时段范围详见下文）交叉制表的违章类型（定义详见下文）统计表。用户可按周进行查询，从而从哥伦比亚特区全域视角，洞察50余种违章组合的年度及周度分布特征。可生成精细度较高的街道段热力图，用于识别交通违章规律、解答相关疑问，例如：在所覆盖的数据时段内，哪类停车违章的发生频次最高？此类数据最多可提供半年度每周对应的26条独立街道段的统计信息。重要说明：本统计结果未包含无法匹配至街道中心线段的违章记录，以及未关联违章发生时段的记录。