Choose No Trespassing signs specifically in compliance with New Mexico Laws. With all of the land space in New Mexico, residents need No Trespassing signs to indicate when intruders are encroaching upon private ground. Messages such as Private Property: No Trespassing are displayed with bright 3M ink on resilient aluminum that lasts through all outdoor weather. Click on a sign to learn more. Note: New Mexico laws indicate the following for posting No Trespassing Signs: 1. Post notices parallel to and along the exterior boundaries, at each roadway or other way of access in conspicuous places, and if the property is not fenced, such notices shall be posted every 500 feet along the exterior boundaries of such land. 2. The notices should be printed legibly in English, be at least 144 square inches in size; contain the name and address of the person who is authorized to grant permission to enter the property; placed at each roadway or apparent way of access onto the property, in addition to the posting of the boundaries; and where applicable, state any specific prohibition that the posting is directed against, such as "No Trespassing," "No Hunting," "No Fishing," "No Digging," or any other specific prohibition.