2. For the purpose of section 6(1)(a) (restriction on driving within a zone) of the 2019 Act(1) the emission standard for—
(a)a compression ignition engine vehicle is the standard specified for that vehicle in—
(i)Table 1 in schedule 1 (euro 6 standards for compression ignition engine vehicles), or
(ii)Table 2 in schedule 1 (euro VI standards for compression ignition engine vehicles),
(b)a positive ignition engine vehicle is the standard specified for that vehicle in—
(i)Table 1 in schedule 2 (euro 4 standards for positive ignition engine vehicles), or
(ii)Table 2 in schedule 2 (euro IV standards for positive ignition engine vehicles),
(c)mopeds and motorcycles is standard specified for those vehicles in the Table in schedule 3 (euro 3).