Dynamic Responses of the Metro Train’s Bogie Frames: Field Tests and Data Analysis

Table 1

Classification of track irregularity.

Wavelength (m)	Type of track irregularity
0.03–0.1	Short wavelength corrugation
0.1–1.0	Medium wavelength corrugation
1–3	Long waves and rolling defects
3–25	Alignment, cant, twist, gauge, etc
25–70	Alignment
>70	Design geometry