Introductory Text1.These Regulations shall come into operation on 23rd May 1980.2.The Motor Vehicles (Designation of Approval Marks) Regulations 1979 shall.3.In Schedule 2— (a) in item 2, in column (5)(a),.4.In Schedule 3, after paragraph 13, add the following new.5.In Schedule 4— (a) after item 2 insert the following.6.In Schedule 5— (a) in paragraph 8, for “20, 21,.SignatureExplanatory Note