KEY ELEMENTS IN THE MAINTENANCE OF HIGH SPEED TRACK

Some of the track maintenance techniques and equipment discussed which have allowed high speed track to be maintained at low cost include: continuous action tamping machines, machines which regulate and compact the ballast while continuously in motion, the mechanised maintenance train which handles different jobs in sequence during the same track possession, dynamic track stabilizer used in combination with high speed tampers and ballast regulators, track measuring cars with three-point measurement of versines, improvement of long-wave deformations using various methods, and paying close attention to the microgeometry of the track.