The benefits of measuring driving exposure using objective GPS-based methods and subjective self-report methods concurrently

摘要: Measurement of individualsr driving exposure has traditionally relied on subjective self-report methods, which tend to be inaccurate and require substantial effort for the individuals volunteering study. The development Global Positioning System (GPS) technology provided a new option accurately objectively measuring exposure. However, some information (trip purpose driver identification) can most easily obtained with methods. Therefore, this study was evaluate concurrent use GPS data loggers telephone-based travel diaries 54 participants (aged = 75) monitored period one week. standard measures (distance driven, time spent driving, number trips), as well that cannot through (travelling speed, route) all participants. distance measured by corresponded distances from odometers in vehicles, indicated measurements were accurate. Furthermore, trips recorded matched reported and, therefore, majority (95.2 per cent) could identified. Also, subset who interviewed (n 16) favourable feedback regarding collection process. findings indicate will advance measurement but methods are still useful obtaining certain information. may not replace traditional complement them.