13. In column 2 of item 2 of the table in regulation 33, for paragraph (b), substitute—
“(b)an agricultural motor vehicle, not being—
(i)a track laying vehicle with an unladen weight not exceeding 7370 kg (which falls in item 11);
(ii)a category T tractor first used after 1st June 1986 which is driven at more than 40 km/h (which falls in item 8);
(iii)a wheeled agricultural vehicle, other than a category T tractor, first used after 1st June 1986 which is driven at more than 20 mph (which falls in item 8); or”.