Want to deter intruders from making their way onto your construction site? The Florida construction site trespass sign from First Sign Corp. warns people against setting foot on your site with the words, “Trespassing Is a Crime!” and “This Area Is a Designated CONSTRUCTION SITE. Anyone Trespassing on This Property Upon Conviction Shall Be Guilty of a FELONY! THEFT From This Site Is a Felony!” The Florida construction area warning sign is 18” x 24”, made from sturdy .080 aluminum, and covered in white AEGP reflective material so that it’s impossible to miss.