Prototype TPWS equipment c2000 from Train Protection Warning System National Project Team, Network Rail. TPWS Trackside Enclosure Box OS/ND, type 628125-01. Serial No. 2000 RFN0002. Stainless steel with plugboard panel, SF OS/ND, type 608126-00. Serial No. 99RFN 0001. TPWS Trackside Enclosure Box OS/ND circa 2000
