Paragraph 20

A person must not take or permit to be taken onto the Bridge, without the prior permission of an authorised person and subject to such conditions as the authorised person may direct (which may include an escort, for which a reasonable charge may be made), any vehicle, except any vehicle entered into the Exemptions Register in accordance with article 9 (payment of tolls) of, and Schedule 2 (register of vehicles exempt from tolls) to, the Order, whose height, width or weight (including load in each case) exceeds the following—

Application for permission of an authorised person under this byelaw must be made in writing at least 6 clear days before the proposed arrival at the Bridge of the vehicle the subject of the application.