Slip tests on GIC contaminated track with variants of the BR MK2 WSP system (MR-VS-040)

There are two versions of the BR Mk2 WSP system in common use. The 'standard' variant is fitted to many HST and loco-hauled Mk3 coaches. Disc braked suburban multiple-units built since 1975 were originally fitted with the standard system. However, there was an excessive number of reported station overruns experienced...