Automatic track top and alignment project demonstration of vertical control of track geometry 25 July 1991 (RR-TD-004)

This note describes the demonstration of the Automatic Track Top and Alignment system as fitted to tamper 73271, to representatives of the DoCE on 25 July 1991. This formed milestone number 5 of contract C0025 with the DoCE and was the first full test of the vertical control system.