 From Obor to the other end, it is again single.Lines 1 and 10 are considered light rail; due to recent modernizations, these routes use upgraded tracks for almost the entire line and mostly new rolling stock.They form a ring around central Bucharest, with line 10 running services clockwise (from Romprim - Piața Sudului - Șura Mare - Șoseaua Viilor - Pasaj Basarab - Bucur Obor - Pod Mihai Bravu - Piața Sudului - Romprim) and line 1 running services counterclockwise (from Romprim - Piața Sudului - Pod Mihai Bravu - Bucur Obor - Pasaj Basarab - Șoseaua Viilor - Șura Mare - Piața Sudului - Romprim).