China Railway comprehensive inspection trains

Some re-vamped commercial trains used for testing purposes are not designated as CITs and have standard serial numbers appended with a "J" (e.g. CRH380AJ).

The CIT001 was ordered by the China Academy of Railway Science on 2 April 2007 and was co-designed by CARS and CNR.

The train is painted with yellow and white striped livery and started test runs on 1 July 2007.

Formation CRH2A-2010 (formerly CRH2-010A) is the first high-speed test train in China and the first CRH2 trainset manufactured by CSR Sifang.

During a test on 22 April 2008, CRH2-061C reached a top speed of over 370 km/h (230 mph) on Beijing-Tianjin high-speed rail[5] and on 11 December 2009 reached an improved top speed of 394.2 km/h (245 mph) on the Zhengzhou-Xi'an high-speed railway line.

The 8-car trainset was manufactured by CSR Sifang factory and rolled off the production line on February 22, 2011.

On February 23, 2011, the CRH400A-001 arrived at CARS; after a series of modifications to rectify problems that occurred during testing, the trainset was set to enter service on March 3,[needs update?]

Formation On December 7, 2010, during the 7th World High-speed Rail Conference held in Beijing, an officer from the CSR Group confirmed that China would perform a high-speed test in 2011 in an attempt to break the then current speed record of 574.8 km/h (357.2 mph) achieved by French trainset V150.