§ 11-2113. Effect of posting or service of notice.

1. No person shall enter or remain unlawfully or engage in any
activity upon land which has been posted pursuant to section 11-2111 in
violation of the terms of such posted signs or the terms of any written
notice and warning served upon such person pursuant to subdivision four
of section 11-2111.

2. No person shall post any sign prohibiting or limiting activities on
land pursuant to this article, unless authorized to do so by the owner,
lawful occupant or other person or organization having authority to post
such lands.

3. No unauthorized person shall injure, conceal, deface or remove a
sign erected and maintained as provided in section 11-2111.