The legal and technical implications of the use of the C.S.E.E. Type UM71 jointless track circuit on B.R. electrified lines (TM-SIG-11)

The C.S.E.E. Type UM71 jointless track circuit has been approved for use on S.N.C.P. lines electrified at 25 kV 50 Hz a.c. This paper examines the implications of the use of this track circuit on B.R. electrified lines and explains why the track circuit has not been approved for this...