Figure 16
A line graph showing the original waveforms of left- and right-track longitudinal irregularity. The x axis represents location in kilometers ranging from 329.55 to 330 kilometers. The y axis represents amplitude in millimeters ranging from -2 to 2 millimeters. The blue solid line represents the left track, and the brown dashed line represents the right track. All values are approximated.Original waveforms of left- and right-track longitudinal irregularity. Source(s): Author's own work