Md. Code, Natural Resources § 5–703

The Secretary shall furnish notices, printed in large letters, calling attention to the dangers of forest fires, and to forest fire and trespass laws, and their penalties. The Secretary shall distribute the notices to forest wardens who shall post them in conspicuous places on State forest reserves and along highways in forest-covered country. It is unlawful for any person to tear down or deface any forest fire warning notice.