Regulation 76 of the Principal Regulations is amended as follows:(a) by omitting from subregulation (1) "vehicle" first occurring and substituting "light vehicle" ;(b) by omitting from subregulation (2) "motor vehicle" and substituting "light motor vehicle" ;(c) by omitting from subregulation (3) "trailer" and substituting "light trailer" ;(d) by omitting from subregulation (5) "vehicle" and substituting "light vehicle" .