| 摘要 |
Techniques are disclosed for updating a train track database after track maintenance so that the database correctly reflects any changes to track geometry or to the geo-locations of features along the tracks (e.g., grade crossings, mileposts, signals, platforms, switches, spurs, etc.). Advantageously, the techniques of the illustrative embodiment enable a track maintenance crew to cost-effectively obtain post-maintenance measurements for features without the use of a Global Positioning System (GPS) unit (e.g., using a tape measure, using a laser rangefinder, etc.).
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