Tags: Railway Line.
TCDD District 1 (Turkish: TCDD 1. Bölge) is one of the seven districts of the Turkish State Railways (TCDD). The headquarters are in Haydarpaşa Terminal in İstanbul.Except for the Kırklareli Branch and the Pehlivanköy-Uzunköprü line the entire district is electrified with over head catenary.