Parking Violations Summary for 2011 - Weeks 1 to 26

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，涵盖哥伦比亚特区大都会警察局（Metropolitan Police Department, MPD）及获相应执法授权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）的交通管制警员，其职责为在特区全境各交叉口开展执法与交通管控以缓解拥堵。移动违章的点位信息取自哥伦比亚特区机动车辆管理局（District Department of Motor Vehicles, DMV）提供的官方数据库。该数据集按每日时段、年度周次、年份及违章类别统计罚单总量。为便于按周次查看空间分布模式，统计结果以聚合后的路段数据形式呈现，即按周次与每日时段（时段范围详见下文）生成违章类型（定义详见下文）的时间交叉统计表。用户可通过周次进行查询，从而从特区全域视角分析超50种不同违章组合的年度与周度分布特征，还可生成精度精细的路段热力图，用于识别违章分布规律、解答相关疑问——例如：本数据集覆盖时段内，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条独立路段统计信息。重要须知：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，均已从本次统计结果中剔除。