Introduction of the NUMBER@1 Stock The design of the trains was finalised in September NUMBER@2 , and manufacture of two pre-production trains began in January NUMBER@3 , with the first train scheduled to be completed by mid-2006 .

Introduction The design of the trains was finalised in September NUMBER@2 , and manufacture of two pre-production trains began in January NUMBER@3 . The first train was scheduled to be completed by mid-2006 .
