I have several users at one of our client locations that use Google Earth. This study also evaluated the distance accuracies associated with using the geometric design standard (the SDRE) and Google Earth Pro, and determined that both methods were robust and accurate, with overall average absolute percentage errors of less than 1% and would be beneficial for obtaining measurements for crash reconstruction, especially when the site of interest is not accessible.įorensic Video Speed Traffic Crash Reconstruction.Ĭopyright © 2020 Elsevier B.V. Google Earth Pro 7.3.3 (latest update) desktop app crashes when syncing data from Power GEOPAK. We demonstrate herein that the SDRE estimated 85.7% of all corresponding onsite measurements to within ±5%, and can thus be relied upon for crash reconstruction. In this study, onsite measurements (by measuring tape, total station or 3D laser scanner) from various locations in Singapore, as well as the corresponding distances based on Google Earth Pro, were compared with those estimated using the SDRE. We report the use of the geometric design standard for road markings published in the "Standard Details of Road Elements" ('SDRE') by the Land Transport Authority ('LTA') of Singapore as a convenient and sufficiently accurate means of estimating distances between features of the roadway, particularly useful for performing speed analysis based on videos.
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