考察通勤路线：GIS 和 GPS 技术的应用。
Examining commute routes: applications of GIS and GPS technology.
机构信息
Centre for Physical Activity and Nutrition Research, Faculty of Health and Environmental Sciences, Auckland University of Technology, Private Bag 92006, Auckland, New Zealand.
出版信息
Environ Health Prev Med. 2010 Sep;15(5):327-30. doi: 10.1007/s12199-010-0138-1. Epub 2010 Mar 20.
OBJECTIVE
The application of geographic information systems (GIS) to describe commute route elements is commonplace, yet the accuracy of GIS-estimated commute routes is not clear. This study compared GIS-estimated commute routes against actual routes traveled as measured using global positioning systems (GPS) to examine differences in urban form surrounding travel routes across different buffer sizes and travel modes.
METHODS
Thirty-seven adults from Auckland, New Zealand participated in the study between January and March 2008. Participants wore GPS units and completed a travel log for 7 days. GPS data were integrated into a GIS database to ascertain commute routes.
RESULTS
Overall, 29 commute journeys were appropriately captured by GPS. Levels of agreement between actual and shortest commute routes were dependent on the buffer size selected, built environment variable examined, and travel mode.
CONCLUSIONS
Despite technical difficulties, GPS assessment of routes traveled is recommended to provide an accurate assessment of commute journey urban form elements.
目的
地理信息系统（GIS）在描述通勤路线要素方面的应用已十分常见，但 GIS 估计的通勤路线的准确性尚不清楚。本研究通过使用全球定位系统（GPS）测量实际路线，比较了 GIS 估计的通勤路线与实际路线之间的差异，以考察不同缓冲区大小和出行模式下出行路线周围城市形态的差异。
方法
2008 年 1 月至 3 月，来自新西兰奥克兰的 37 名成年人参与了这项研究。参与者佩戴 GPS 设备并完成了 7 天的出行日志。GPS 数据被整合到 GIS 数据库中以确定通勤路线。
结果
总体而言，GPS 成功捕获了 29 次通勤行程。实际和最短通勤路线之间的一致性水平取决于所选缓冲区大小、所研究的建成环境变量以及出行模式。
结论
尽管存在技术困难，但建议使用 GPS 评估出行路线，以对通勤旅程的城市形态要素进行准确评估。
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