Moving Violations Summary for 2012

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.本图层所涵盖的零愿景（Vision Zero）交通安全数据，均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，负责在特区全境各路口开展执法与管控以缓解交通拥堵。动态交通违法的点位信息，则来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。 本数据集依据每日时段、年度周次、年份及违法类别对罚单数量进行汇总统计。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法的空间分布特征。本数据集为按周次与每日时段（时段范围详见下文）划分的违法类型（定义详见下文）时序交叉表。用户可按周次进行查询，从哥伦比亚特区全域视角获取年度及周度的50余种违法组合统计结果。 可生成高精度街道段热力图，用于识别违法模式并解答相关疑问。例如，本数据集覆盖时段内哪种停车违法类型最为频发？本数据集可提供多达26个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：所有无法匹配至街道中心线路段的记录，均已被排除在本次汇总之外；所有未关联违法时段的记录，亦已被排除在本次汇总之外。