Comparing Geometry Correction Capability of AGGS and TGCS Tamper Control Systems on Amtrak’s Northeast Corridor

One of Amtrak’s high-speed continuous action tampers has been fitted with TGCS (Track Geometry Control System) tamper control software to compare the quality and durability of geometry correction it provides with that of the existing tamper control system, AGGS. Comparison between the two systems is made by reviewing measured track geometry data from before and after maintenance, and by reviewing changes in ride quality accelerations of instrumented passenger cars. Although the testing program is in its early stages and the number of test locations so far is limited, results to date are very much in favor of TGCS.