Railway Track Geometry

Poor track geometry can lead to excessive rail and wheel wear, abnormal track loading and acceleration, broken rails, fastenings and derailments.

Measurements are made with EN 13848-4 compliant trolleys which are considered the “gold standard” in the industry. Geometry measurements include:

+ Gauge

+ Gauge variation

+ Cross-level and super elevation

+ Twist and warp; multiple custom lengths can be used for calculations

+ Surface/vertical alignment; left, center and right rail, both short and long chords

+ Elevation runoff

+Horizontal alignment; left, center and right rail, both short and long chords

+ Alignment deviation from uniformity defect reporting

Analysis can be performed using a Chord-based approach (the standard in Canada and the USA) or Space Curve and both filter types and low and high-pass cutoffs are fully customizable to meet your specific needs.

Reporting includes geometry graphs (“brush charts”) with flagged defects, defect lists, KML maps, CSV spreadsheets, JPEG images and can even include specialized reports such as run-over-run comparisons and even measurements against design values.

Reports include GPS coordinates as well as chainage (station) for each geometry sample and defect. Evaluation can include both the current class of track as well as higher classes to help you evaluate the geometry defects which you need to correct in order to raise your track class.