Research Article
Smartphone’s Sensing Capabilities for On-Board Railway Track Monitoring: Structural Performance and Geometrical Degradation Assessment
Table 1
Track discontinuities evidencing poor performance.
| | Description | Location (km) | Chord range (m) | Maximum amplitude (mm) | Critical aspect |
| | Culvert | 1.5 | 6.75–16 | 6 | Higher degradation | | Road underpass | 2.4 | 14–17 | 8.5 | Higher degradation | | Culvert | 3.3 | 7–14.25 | 5 | Higher degradation | | Around turnout | 3.6–3.8 | 5–8 | 12 | Derailment risk | | 3.5–18.25 | 12 | Higher degradation | | Train station exit | 4.1 | 4.75–16 | 10 | Higher degradation | | Unauthorized pedestrian crossing | 4.3 | 3.75–17.25 | 10.5 | Higher degradation | | Culvert (old masonry) | 4.5 | 23.25–34.75 | 23.5 | Passenger discomfort | | 7.75–19.25 | 14 | Higher degradation | | Unauthorized pedestrian crossing | 4.6 | 4.5–16.75 | 8.5 | Higher degradation | | Rail joint and culvert | 5.1 | 6.25–15.75 | 6 | Higher degradation | | Drainage problems | 5.2 | 4.75–18.75 | 13 | Higher degradation | | Rail joint | 5.45 | 4.25–16 | 6 | Higher degradation | | Bridge approach | 6.3 | 10–17.5 | 10 | Higher degradation | | Near turnout | 6.6 | 5.5–15.25 | 8 | Higher degradation | | Former road crossing | 8 | 4.25–15.25 | 8.5 | Higher degradation | | Culvert | 8.1 | 13.5–15.25 | 6 | Higher degradation | | Road underpass | 8.3 | 12.5–15.25 | 5 | Higher degradation | | Former road crossing | 8.9 | 10–15.75 | 7 | Higher degradation | | Near culvert | 9.1 | 4.75–14.75 | 7 | Higher degradation | | Near culvert | 10.1 | 7–19 | 13 | Higher degradation |
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