1.25 Police Body Cameras (summary)

Contains annual data, including number of calls uploaded and number of calls with a matching video. This data is the basis for the compliance percentage for Performance Measure 1.25. Preparation Method Change Before 2024, the data team manually combined police call records, officer activity logs, and Axon video information to show when officers used their body-worn cameras for City of Tempe’s priority emergency calls (priority 1 and 2). Starting as a transition process in 2024, Axon now automatically creates this report by connecting the City of Tempe’s priority emergency calls (priority 1 and 2) with any matching body-camera videos that officers upload. This automated process improves consistency and reduces manual handling of data. Prior to 2024: Calls for Service (CFS): Police Calls for Service were limited to the selected time period. Cancelled calls, test calls, and callback call types were removed. City of Tempe’s priority emergency calls (priority 1 and 2) were identified. Officer Unit History: Raw unit history data may contain two officers per unit. Data were split and recombined so each officer maintained an individual record. Unit history was limited to calls for service where an officer had a documented arrival and spent at least one minute on scene. When multiple arrivals occurred for a single call, the first arrival and last clear time were selected to calculate duration and superfluous arrivals were removed. Unit history was matched to the CFS dataset by primary key (call number). Axon Metadata: Axon metadata were matched to unit history first by officer, then by month and week, using a full outer join. Additional matching was performed on the call number reported in the metadata, and then to call number based on video recorded date/time and officer unit history date/time. Records were selected where there was either a match on call number or on date/time. Transition Starting in 2024: Data preparation transitioned to an automated Axon-generated report linking Tempe Police Department Calls for Service (CFS) data to Body-Worn Camera (BWC) videos uploaded to the Axon system. The automated report references priority 1 and 2 CFS and identifies corresponding BWC videos uploaded for those calls to generate the activation rate. The annual compliance percentage using the new process will be available after 2025, once all 2025 data are complete. The performance measure dashboard is available at 1.25 Police Body Cameras. Data Dictionary Additional Information Source: Police calls for service, officer activity, Axon metadata. Contact: Jeanne Pennington Contact E-Mail: [e-mail] Data Source Type: Web-based automated system Preparation Method: An automated report generated by Axon linking Tempe Police Department Calls For Service (CFS) data to Body Worn Camera (BWC) video uploaded to the Axon system. Axon referenced priority 1 and 2 CFS and videos for those CFS that have been uploaded to generate the activation rate. Publish Frequency: Annually Publish Method: Manual

本数据集涵盖年度统计数据，包含已上传警情通话总量及匹配对应视频的警情通话数量，该数据为2024年前绩效指标1.25合规率的核心计算依据。

数据制备流程变更
2024年以前，数据团队需手动整合警方警情记录、警员执勤日志及Axon视频信息，以展示警员在坦佩市优先级1、2级优先应急警情中使用随身执法记录仪的情况。自2024年起进入过渡流程，Axon现已通过对接坦佩市优先级1、2级优先应急警情与警员上传的匹配随身执法记录仪视频，自动生成此类报告。该自动化流程可提升数据一致性，减少人工数据处理工作量。

2024年以前的数据制备细则：
1. 警情呼叫（Calls for Service, CFS）：仅保留选定时间段内的警情呼叫，剔除已取消呼叫、测试呼叫及回拨呼叫类型，识别出坦佩市优先级1、2级的优先应急警情。
2. 警员执勤单元历史：原始单元历史数据中，单个单元可能关联两名警员，需对数据进行拆分与重组，确保每位警员拥有独立的执勤记录。单元历史仅保留警员有抵达记录且在现场停留时长不少于1分钟的警情呼叫。若单条警情存在多次抵达记录，则选取首次抵达与最终离场时间计算驻场时长，并剔除冗余抵达记录。通过主键（警情编号）将单元历史数据与CFS数据集进行匹配。
3. Axon元数据：先通过警员维度、再通过月份与周度维度，采用全外连接将Axon元数据与单元历史数据进行匹配。随后额外通过元数据中记录的警情编号开展匹配，并基于视频录制日期/时间与警员单元历史日期/时间匹配警情编号。仅保留警情编号匹配或日期/时间匹配的有效记录。

2024年起的过渡制备流程：
数据制备转为由Axon自动生成的报告，将坦佩警察局警情呼叫（CFS）数据与上传至Axon系统的随身执法记录仪（Body-Worn Camera, BWC）视频进行关联。该自动化报告参考优先级1、2级的CFS数据，识别对应警情所上传的BWC视频，以计算执法记录仪激活率。采用新流程计算的年度合规率需待2025年全量数据完整后，于2025年及之后对外公布。绩效指标仪表板可通过「1.25 警用随身执法记录仪」模块访问。

数据字典补充说明
数据来源：警方警情呼叫记录、警员执勤日志、Axon元数据
联系人：Jeanne Pennington
联系邮箱：[e-mail]
数据来源类型：基于Web的自动化系统
数据制备方法：由Axon自动生成报告，将坦佩警察局警情呼叫（CFS）数据与上传至Axon系统的随身执法记录仪（BWC）视频进行关联。Axon参考优先级1、2级的CFS数据及对应已上传视频，计算执法记录仪激活率。
发布频率：年度发布
发布方式：人工发布