Part IV MOTOR VEHICLES WITH AT LEAST FOUR WHEELS USED FOR THE CARRIAGE OF PASSENGERS
In this Part, references to a “motor vehicle” are to a motor vehicle with or without a semi trailer which–
(a)
has at least four wheels;
(b)
has an unladen mass exceeding 400 kg or an engine with net power exceeding 15 kW;
(c)
is used for the carriage of passengers; and
(d)
is not a motor vehicle described in Class 11 or Class 12.