2.  Any exemption, consent, approval or requirement granted or imposed for the purposes of any provisions of the regulations specified in the second schedule hereto shall, if in force at the commencement of the Act and so far as it could have been granted or imposed for the purposes of the Coal and Other Mines (Locomotives) Regulations, 1956 (whether by that instrument or an instrument to the like effect), have effect as if it had been so granted or imposed.