Guangzhou Metro B1

The B1, commonly known as the Guangzhou Metro Line 3 train, is a class of rolling stock built for Line 3 of Guangzhou Metro by Siemens Mobility and CSR Zhuzhou Locomotive. It is the first mass-produced B-class rolling stock for the Guangzhou Metro and entered service on 26 December 2005. The contract was awarded to Siemens Mobility on 19 May 2003, the company that had won the earlier A1 contract, and the first train was completed on 18 November 2005. The B1 features Siemens traction motors, Knorr EP-2002 electronic braking systems, plug-style doors and electronic strip maps. Units have been double-paired for service since 20 April 2010 to expand the service capacity of Line 3, and on 8 January 2010 the first train, set 03x001-002, received an overhaul at Xiajiao Depot.