Amending and supplementing the Regulation on management of train operation tests and grant, renewal and withdrawal of train-operating licenses, promulgated together with the Transport Minister’s Decision No. 44/2005/QD-BGTVT of September 22, 2005, and the Regulation on contents and procedures of tests for train-operating licenses, promulgated together with Decision No. 37/2006/QD-BGTVT of November 1, 2006