MBTA Gated Station Entries - Historical

This file contains the count of unscaled station entries for gated MBTA subway, Silver Line and light rail stations by service date and 30-minute period. To note: A service date is defined as 3:00AM – 2:59AM (2:59AM the next day). An entry is measured as a successful smart card tap, credit card tap, or ticket insertion recorded at a faregate. Entries are unscaled and so do not take into account non-interaction with the fare gate (e.g. children or other free passengers, fare evasion, etc.). Entries are only provided for times when the station is open. Employee taps are included in this data. This data does not represent total ridership at a station. Faregates are held open at times for special events or emergencies and entries are not captured accurately during those times. Files are separated by calendar year for previous years, and by month for the current calendar year. Due to data issues, data is not guaranteed to be complete for any stop or date. The following explanation of "split stations" only applies to those stations in the MBTA system that service multiple rapid transit lines. Since validated gated entries only determine that a person entered a station, it cannot be used to determine the number of passengers that use a specific line in stations that service multiple lines. To adjust for this, we rely on Central Transportation Planning Staff (CTPS) surveys that gather passenger behavior to develop "split factors." These factors determine the proportion of passengers that board each of the available lines in a split station after entry. For example, at Government Center, passengers tap and enter through the main gates and may choose to take the blue line or the green line. According to the surveys, we assume that about 90% of Government Center entrants ride the green line and the remaining 10% take the blue line. For the split stations in this dataset, the entries will show up to one decimal point to account for the factors and reduce rounding error when aggregating. It will also create two rows in the dataset for the station, one for each line. Data Dictionary: Name Description Data Type Example service_date The service date of the gated station entries. Times that are within the service date, but after midnight, are listed as ocurring on the previous calendar date, e.g. entries between 12:00:00AM - 12:30:00AM on Jan 2, 2020 is listed as '2020/01/01 12:00 AM'. Date 2019/12/31, 12:00 AM time_period The start time of the 30-minute time period, in 24-hour time. Periods starting after 11:59 PM are represented as 00:00 plus their 24-hour time. For example, 1:30:00AM - 1:59:59AM is listed as '01:30:00'. String 01:30:00 stop_id GTFS-compatible stop for which gated station entries should be returned; usually provided as the parent station id. String place_wondl station_name GTFS-compatible station for which gated station entries should be returned. String Wonderland route_or_line Description of the route or service provided. String Blue Line gated_entries Property of “Gated Station Entries”. Unscaled station entries for gated heavy rail and light rail stations for date and 30-minute increment. Integer 324 MassDOT/MBTA shall not be held liable for any errors in this data. This includes errors of omission, commission, errors concerning the content of the data, and relative and positional accuracy of the data. This data cannot be construed to be a legal document. Primary sources from which this data was compiled must be consulted for verification of information contained in this data.本文件包含按服务日期与30分钟时段统计的马萨诸塞湾交通局（MBTA）闸机式地铁、银线及轻轨车站的未缩放进站人次。 请注意：服务日期的定义为当日3:00至次日2:59（即次日凌晨2点59分）。 单次进站指在闸机处被记录的有效智能卡刷卡、信用卡刷卡或车票插入操作。本次统计的进站人次未经过缩放处理，因此未涵盖未与闸机发生交互的情况（例如儿童或其他免票乘客、逃票行为等）。仅提供车站运营时段的进站人次数据，且包含员工刷卡记录。本数据并不代表车站的总客流量。若因特殊活动或紧急情况临时开放闸机，则该时段内的进站人次无法被准确记录。 往年数据按自然年份分文件存储，本年度数据则按自然月份分文件存储。受数据质量问题影响，无法保证任意站点或任意日期的数据均完整无缺。 以下对“拆分车站（split stations）”的说明仅适用于MBTA系统内服务多条捷运线路的车站。由于经闸机验证的进站记录仅能确认乘客已进入车站，无法用于统计服务多条线路的车站中搭乘特定线路的乘客人数。为修正这一问题，我们依托中央交通规划专员办公室（CTPS）收集乘客出行行为的调研数据，制定“拆分系数”。该系数用于计算拆分车站内，乘客在进站后搭乘各条可用线路的比例。以政府中心站（Government Center）为例，乘客通过主闸机刷卡进站后，可选择搭乘蓝线或绿线；根据调研数据，我们假设约90%的政府中心站进站乘客会搭乘绿线，剩余10%搭乘蓝线。针对本数据集中的拆分车站，进站人次数据将保留一位小数，以适配拆分系数并降低汇总时的四舍五入误差，且该车站将在数据集中生成两条记录，分别对应各条线路。 数据字典： 字段名：service_date；字段说明：闸机进站人次对应的服务日期。若时段处于服务日期范围内但已过午夜，则记录为前一自然日的日期，例如2020年1月2日00:00:00至00:30:00的进站人次将被标注为"2020/01/01 12:00 AM"；数据类型：日期型；示例：2019/12/31, 12:00 AM 字段名：time_period；字段说明：30分钟时段的起始时间，采用24小时制。若时段起始时间晚于23:59，则记为00:00加上对应的24小时制时间，例如凌晨1:30:00至1:59:59的时段将被标注为"01:30:00"；数据类型：字符串型；示例：01:30:00 字段名：stop_id；字段说明：符合通用公交馈送规范（GTFS）标准的站点ID，用于返回对应闸机的进站人次数据，通常为父站点ID；数据类型：字符串型；示例：place_wondl 字段名：station_name；字段说明：符合GTFS标准的车站名称，用于返回对应闸机的进站人次数据；数据类型：字符串型；示例：Wonderland 字段名：route_or_line；字段说明：线路或服务的描述信息；数据类型：字符串型；示例：Blue Line 字段名：gated_entries；字段说明：“闸机进站人次”字段，即对应日期与30分钟时段内，闸机式重铁与轻轨车站的未缩放进站人次；数据类型：整型；示例：324 马萨诸塞州运输部（MassDOT）与MBTA不对本数据中的任何错误承担责任，包括遗漏、误传、数据内容错误以及数据的相对与位置准确性错误。本数据不得被视为法律文件，如需验证本数据包含的信息，需查阅其原始数据源。