Moving Violations Summary for 2014

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.本图层包含的零愿景（Vision Zero）数据，涉及哥伦比亚特区大都会警察局（Metropolitan Police Department, MPD）及获授权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，负责在特区全境各交叉口开展执法与管控以缓解交通拥堵。移动违章的点位信息源自哥伦比亚特区机动车辆管理局（District Department of Motor Vehicles, DMV）提供的数据库。该数据按违章发生时段、年度周次、年份及违章类别，对罚单数量进行汇总统计。汇总形式采用聚合后的街道路段数据序列，以便按周度视角分析空间分布模式。本数据集为按周度与时段（时段范围详见下文）划分的违章类型（定义详见下文）时间交叉表。用户可按周度查询，以获取特区全境超50种不同违章组合的年度及周度分析视角。可生成精准度较高的街道路段热力图，用于识别违章分布规律并解答相关问题，例如：本次数据覆盖时段内，哪种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条独立街道路段的统计信息。重要说明：无法关联至街道中心线路段的记录，以及未标注违章发生时段的记录，均已被排除在本次汇总数据集之外。