Moving Violations Summary for 2009

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.本图层包含的零死亡愿景（Vision Zero）数据集，涵盖哥伦比亚特区大都会警察局（Metropolitan Police Department, MPD）及其获授权合作机构开具的违章停车罚单数据。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，负责在特区全境各路口开展执法与管控以缓解交通拥堵。行车违章的点位信息来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。本数据集以罚单数量为统计指标，按当日时段、年度周次、年份及违章类别进行汇总。本次汇总采用聚合街道段数据的形式，以便按周次直观呈现违章行为的空间分布模式。本数据集为按周次与当日时段（时段划分详见下文）交叉制表的违章类型（定义详见下文）时序交叉表。用户可按周次进行查询，从而从特区全域视角了解年度及周度维度下超过50种违章组合的相关情况。可生成精度极高的街道段热力图，用于识别分布规律、解答相关疑问，例如：在本数据集覆盖的时段内，哪种违章停车行为最为频发？本数据集最多可提供26条独立街道段的统计信息，对应半年内的每一个周次。重要说明：无法关联至街道中心线段的记录已被排除在本次汇总之外；未关联当日时段信息的违章记录同样已被排除。