PKP Signalling Regulations on Polish State Railways E1, 1976 edition, published by Wydawnictwa Komunikacji i Łączności WKŁ. Excellent condition - no tears or annotations. I bought this from the railway museum at Warszawa Główna (Muzeum Kolejnictwa w Warszawie) in 1996.
PKP Signalling Rule Book would be a valuable resource for railway companies, signal engineers, and train operating staff, helping them understand and implement essential signalling rules and regulations in Poland's railway system.
