9.—(1) A person reasonably suspected by an authorised person of breaching or attempting to breach a byelaw must immediately give that person's name and address when requested to do so by an authorised person.
(2) The authorised person requesting details under byelaw 9(1) must state the nature of the suspected breach of the byelaw in general terms at the time of the request.
10.—(1) 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.
(2) A person must not obstruct an authorised person acting in the course of the duties of the authorised person.
(3) 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.
(4) 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.
11.—(1) An authorised person who is exercising any power conferred on an authorised person by any of the byelaws must produce a form of identification when requested to do so.
(2) The form of identification mentioned in byelaw 11(1) must include the name of the authorised person's employer and a means of identifying the authorised person.
12. An authorised person acting in the course of the duties of the authorised person is not liable for a breach of a byelaw.
13. A person who attempts to breach a byelaw is liable to the same penalty as a person who breaches a byelaw.