Instrumentation for APT'E' tamped track tests @ upper Broughton 1/11/75-19/12/75 (IM-IS-326)

This series of tests was conducted at the Old Dalby test site and its main purpose was to measure the lateral movement of the track on unconsolidated ballast at a specific point on the upper Broughton curve. The measurements were made after the passage of the train with varying degrees...