substitute
"P-plate" means a square sign, issued or authorised by the road transport authority—
(a) with sides at least 155mm long; and
(b) with the letter ‘P'—
(i) for the holder of a provisional car licence subject to the P1 licence conditions—in red on a white background; or
(ii) for the holder of a provisional car licence subject to the P2 licence conditions—in green on a white background; or
(iii) for the holder of a provisional motorcycle licence—in red on a white background.