In-service monitoring of wheel slide activity on a class 508 EMU (MR-VS-016)

It was reported by DM&EE that wheelslide was occurring on Class 507 & 508 Electric Multiple Units in the Merseyside area, despite the vehicles being fitted with WSP equipment which passed all functional checks. The resulting tread damage was consistent with wheelsets having locked-up at speeds above 30 km/h. ...