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Field Constraints Tables","","PennDOT Open Data Portal 公共事故数据文件以警务机关提交的警报事故报告、AA600 司机事故报告表提供的驾驶人申报数据，以及在 Crash Data Analysis and Retrieval Tool（CDART）数据库中计算生成的字段构成。文档说明哪些可用于公开发布的数据会排除含可识别个人信息或可能推断当事人信息的内容。年度数据以 Microsoft Excel CSV 形式按八个数据表组织，包括 CRASH、FLAG、VEHICLE 及其衍生的 CYCLE、COMMERCIAL、TRAILER，并给出关键主键关系及记录匹配规则，同时列出 CRASH 表字段名称、类型、长度与约束线索。",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/penndot-open-data-portal-crash-data-dictionary-field-constraints-tables/296525/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/penndot-open-data-portal-crash-data-dictionary-field-constraints-tables/296525.png","ImageObject",300,407,{"name":92,"@type":93},"Paura","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-12","2026-09-18",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"公共事故数据由哪些来源构成？","Question",{"text":112,"@type":113},"公共事故数据来自警方事故报告数据（由调查的警务机构提交至 PennDOT）、AA600 司机事故报告表中的驾驶人申报数据，以及 CDART 数据库中保留的计算字段。","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"为什么某些数据没有包含在公开数据集中？",{"text":117,"@type":113},"包含可识别个人信息或可能用于推断事故当事人信息的数据会被排除，因此不会进入公开发布的数据集。",{"name":119,"@type":110,"acceptedAnswer":120},"CRASH、FLAG、VEHICLE 等表之间如何关联？",{"text":121,"@type":113},"CRASH 表使用 Crash Record Number（CRN）作为唯一事故用例标识；FLAG 表以 CRN 与 CRASH 表一对一关联。VEHICLE 表使用 CRN 与 Unit Number（UNIT_NUM）定位事故中的唯一单元，并与 CRASH 表呈一对多关系。","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},296525,1790531011,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},13056712833777,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","PennDOT Open Data Portal Crash Data Dictionary and Field Constraints Tables  \nThe Public Crash Data files consist of data obtained from Police Crash Report data submitted to PennDOT by investigating police agencies, driver reported data from the AA600 Driver’s Accident Report form, and calculated fields kept in the Crash Data Analysis and Retrieval Tool (CDART) database. Data that is protected due to containing Personally Identifiable Information, or that could be used to infer information about persons involved in a crash are not included in the public dataset.  \nThe annual data extract is kept as a series of Microsoft Excel CSV files and are organized as 8 distinct data tables as follows:  \nCRASH – Data that is relevant to the crash from crash reports, and calculated summary fields are contained in this table. The Crash Record Number (CRN) is used to identify unique crash cases. This number is created by the crash reporting system as each new crash case is created. Not all crashes are included in the final consolidated list of reportable crashes. Incomplete, duplicated, and non-reportable crashes are excluded from the annual data extract.  \nFLAG – This table contains fields that identify a crash by category. For each category, the field will contain a 0 if the crash cases does not meet the criteria for the flag and a 1 if it does meet the criteria. Each field can be used for data selection or for counts of crashes that meet certain criteria. The CRN is used as the key for this table and has a one to one relationship to the CRASH table.  \nVEHICLE – This table defines a unique Motor Vehicle or Non-Motorist Unit involved in the crash. It contains information regarding the motor vehicle or non-motorist and some flags that identify the unit as meeting certain criteria. The CRN and Unit Number (UNIT_NUM) fields identify a unique unit within the crash and has a one to many relationship with the CRASH table. All reportable crashes must have at least 1 UNIT and must have a motor vehicle in transit (which includes hit and run motor vehicles) .  \nCYCLE – This table contains VEHICLE information for Motorcycles. The CRN and UNIT_NUM define the unit that corresponds to the vehicle record. There is a one to one relationship between the VEHICLE table and the CYCLE table. If the VEHICLE record does not have a Vehicle Type (VEH_TYPE) of “2”, then no CYCLE table record should exist for that VEHICLE record.  \nCOMMERCIAL-This table contains VEHICLE information for commercial vehicles. The CRN and UNIT_NUM define the unit that corresponds to the vehicle record. There is a one to one relationship between the VEHICLE table and the COMMERCIAL table. If the VEHICLE record does not have a Commercial Vehicle (COMM_VEH) of “Y”, then no COMMERCIAL table record should exist for that VEHICLE record.  \nTRAILER-This table contains VEHICLE information for Trailing Units. The CRN, UNIT_NUM and define the unit that corresponds to the vehicle record. There is a one to one relationship between the VEHICLE table and the COMMERCIAL table. If the VEHICLE record does not have a Commercial Vehicle (COMM_VEH) of“Y”, then no COMMERCIAL table record should exist for that VEHICLE record. There can be as many as 3 Trailer records for one VEHICLE.  \nTable Name CRASH  \n\n| Column Name | Short Title/Description | Type | Length | Constraints |\n| --- | --- | --- | --- | --- |\n| ARRIVAL TM | Time police arrived atthe scene | TEXT | 4 | HHMM |\n| AUTOMOBILE_COUNT | Total number of Automobiles Involved | NUMBER | 2 |  |\n| BELTED_DEATH_COUNT | Total Deaths of belted occupants | NUMBER | 2 |  |\n| BELTED_SUSP_SERIOUS_INJ_COUNT | Total Suspected Serious Injuries of belted occupants | NUMBER | 2 |  |\n| BICYCLE_COUNT | Total number of Bicycles involved | NUMBER | 2 |  |\n| BICYCLE_DEATH_COUNT | Total number of Bicyclist Fatalities | NUMBER | 2 |  |\n| BICYCLE_SUSP_SERIOUS_INJ_COUNT | Total number of Bicyclist Suspected Serious Injuries | NUMBER | 2 |  |\n| BUS_COUNT | Total number of Buses i","cbCaidaYrsfFp6hw","https://ap.wps.com/l/cbCaidaYrsfFp6hw","pdf",1183616,56,"English","# Public Crash Data Overview\n## Source Data and Privacy Exclusions\n## Annual Data Extract Organization\n# Data Tables and Relationships\n## CRASH Table and Key Fields\n## FLAG Table and Category Flags\n## VEHICLE Table and Unit Linking\n## CYCLE Table for Motorcycles\n## COMMERCIAL Table for Commercial Vehicles\n## TRAILER Table for Trailer Units\n# CRASH Table Field Dictionary\n## Column Names, Types, Lengths, and Constraints","[{\"question\":\"公共事故数据由哪些来源构成？\",\"answer\":\"公共事故数据来自警方事故报告数据（由调查的警务机构提交至 PennDOT）、AA600 司机事故报告表中的驾驶人申报数据，以及 CDART 数据库中保留的计算字段。\"},{\"question\":\"为什么某些数据没有包含在公开数据集中？\",\"answer\":\"包含可识别个人信息或可能用于推断事故当事人信息的数据会被排除，因此不会进入公开发布的数据集。\"},{\"question\":\"CRASH、FLAG、VEHICLE 等表之间如何关联？\",\"answer\":\"CRASH 表使用 Crash Record Number（CRN）作为唯一事故用例标识；FLAG 表以 CRN 与 CRASH 表一对一关联。VEHICLE 表使用 CRN 与 Unit Number（UNIT_NUM）定位事故中的唯一单元，并与 CRASH 表呈一对多关系。\"}]","PennDOT Open Data Portal Crash Data Dictionary - Field Constraints Tables | PDF",1789733292,141]