(1) (a) On what legal basis are carriers of abnormal loads required to apply for Abnormal Load Exemption Permits and (b) what legal provisions determine the (i) fees to be charged and (ii) manner in which it is calculated; (2) (a) on what legal grounds are vehicles required to be subjected to a sequencing process which determines whether it is classified as an abnormal vehicle and (b) what are the relevant details of the process used to classify such vehicles; (3) what (a) legal grounds determine which requirements are to be met in order for a vehicle to successfully pass through the specified process and (b) legal prescription determines the basis for determining the masses applicable to the vehicles concerned?