a rule, contravention of which does not give rise to any of the consequences provided for by other provisions of the Act; and which provides, in accordance with section 138C172 of the Act, that:
(a) contravention may be relied on as tending to establish contravention of such other rule as may be specified; or
(b) compliance may be relied on as tending to establish compliance with such other rule as may be specified; or
