| [[A C151A train entering Ang Mo Kio station during a test run on 4/3/2011.|250px]]|
A C151A train entering Ang Mo Kio station during a test run on 4/3/2011.
On May 6, 2009, LTA announced that Kawasaki Heavy Industries and CSR Sifang Locomotive had won over Hyundai Rotem, Bombardier Transportation and Mitsubishi Heavy Industries to secure the contract at a cost of S$369 million. This was despite Hyundai Rotem offering the lowest bid at S$323 million. CSR Sifang would handle the manufacture and testing of the rolling stock, while Kawasaki oversees the project and design. The C151A was the first successful joint venture between these two companies in the international market. These new trains are currently being brought into Singapore, with one already under test.
Individual cars are assigned a 4 digit serial number by the rail operator SMRT.
- The car numbers of the trains range from x501 to x544,
- where x depends depends upon whether the car is the first, second or third car from either end of the train. The first car uses the number 3, the second uses a 1 & the third uses a 2. (Example : 3501 for the first carriage)
- The other 3 digits is the train identification number. A full length train of 6 cars has 2 different identification number, one for the first 3 cars, and the same number plus 1, for the other three. The smaller number is always an odd number. For example, a train would consist of 6 cars with serial numbers, 3501, 1501, 2501, 2502, 1502, 3502 respectively.