(3) The provisions of the Chapter relating to the grant, revocation and suspension of permits shall apply to the grant, revocation and suspension of countersignatures of permits: Provided that it shall not be necessary to follow the procedure laid down in Section 57 for the grant of counter signatures of permits, where the permits granted in any one State are required to be counter signed by the State Trans port Authority of another State or by the Regional Trans port Authority concerned as a result of any agreement arrived at between the States after complying with the requirements of sub section (3 A), or for the grant of countersignatures of permits in pursuance of any direction issued by the Commission under clause (c) of sub section (2) of section 63 A." A reading of the provisions of section 63 of the , extracted above, shows that in the absence of any rules to the contrary framed under the a permit granted by the Regional Transport Authority of any one region is not valid in any other region unless the permit has been counter signed by the Regional Transport Authority of the other region and a permit granted in any one State is not valid in any other State unless it is countersigned by the State Transport Authority of the other State or of the Regional Transport Authority concerned.