 The Express Nakhon Phing was then regarded to be the best train offered by the SRT.The service has now been replaced by the Uttarawithi Express No.9 and 10 are replaced with new train sets from Changchun Railway Vehicles Co., Ltd.The Nakhon Phing Special Express was introduced on 13 April 1987, as the part of "Visit Thailand Year 1987" and supplanted the Northern Express with the schedule of the old Northern Express (now Special Express 13/14, introduced on 1 November 1922).