144AHydrogen-powered vehicles

144A Hydrogen-powered vehicles (1) A hydrogen-powered vehicle or a vehicle modified to be a hydrogen-powered vehicle must have fixed conspicuously to each number plate— (a) in the case of a hydrogen-powered vehicle fitted with one hydrogen fuel container, a label that complies with subclause (2); or (b) in the case of a hydrogen-powered vehicle fitted with 2 or more hydrogen fuel containers, 2 labels that comply with subclause (2). (2) For the purposes of subclause (1), a label complies with this subclause if the label is a regular pentagonal shape— (a) each side of which is 20 millimetres long; and (b) that is made of metal and at least one millimetre thick; and (c) that is reflective yellow; and (d) that is marked "H" in an upright position on the label in a black capital letter at least 10 millimetres high in the orientation shown in the example; and (e) that does not wholly or partly obscure any characters on the number plates. The example of the label is for illustrative purposes only and does not represent the label's actual size, dimensions or colour.