A person in the tunnels areas must carry out the reasonable instructions of an authorised person or the requirements of a notice displayed by TfL.

A person must not obstruct an authorised person acting in the course of the duties of the authorised person.

A person acting in compliance with the instructions of an authorised person does not commit a breach of the byelaw which otherwise prohibits the act.

A person is not subject to a penalty for breach of a byelaw by disobeying a notice unless it is proved to the satisfaction of the Court before whom the complaint is laid that the notice referred to in the particular byelaw was displayed.