BR official
Author's collection
Test Coach 'Mercury'
| Prior to being incorporated into the Structure Gauging
Train RDB975280 Test Coach Mercury had been used in the late 1970's to monitor the
transponders then being fitted to the WCML in connection with the introduction
of the C-APT track to train communication system for the Advanced Passenger
Train.
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Here is Test Coach Mercury
in the formation of a scheduled passenger train on the WCML. BR official |
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This is a closer view of the transponder in
the track. Something similar is used today to control tilt on Class 221
Voyagers and Pendolinos. Author's collection |