Sec. 30.06. TRESPASS BY HOLDER OF LICENSE TO CARRY CONCEALED HANDGUN. (a) A license holder commits an offense if the license holder:
(1) carries a handgun under the authority of Article 4413(29ee), Revised Statutes, on property of another without effective consent; and
(2) received notice that:
(A) entry on the property by a license holder with a concealed handgun was forbidden; or
(B) remaining on the property with a concealed handgun was forbidden and failed to depart.
(b) For purposes of this section, a person receives notice if the owner of the property or someone with apparent authority to act for the owner provides notice to the person by oral or written communication.
(c) In this section:
(1) "Entry" has the meaning assigned by Section 30.05(b).
(2) "License holder" has the meaning assigned by Section 46.035(f).
(3) "Written communication" means:
(A) a card or other document on which is written language identical to the following: "Pursuant to Section 30.06, Penal Code (trespass by holder of license to carry a concealed handgun), a person licensed under Article 4413(29ee), Revised Statutes (concealed handgun law), may not enter this property with a concealed handgun"; or
(B) a sign posted on the property that:
(i) includes the language described by Paragraph (A) in both English and Spanish;
(ii) appears in contrasting colors with block letters at least one inch in height; and
(iii) is displayed in a conspicuous manner clearly visible to the public.
(d) An offense under this section is a Class A misdemeanor.
Sub-section iii could use more specific language IMO but I would certainly argue that if there are entrances not posted and commonly used, that would not be "in a conspicuous manner".
Cops typically do not notice, the last time I was stopped by DPS (not often BTW) he approached the right side of the car (service road). He asked me (after ID) if I had my weapon on me, I told him I did, he asked where and I told him on my right hip. "Really?!" was his response, he was at my right side and clearly surprised. The rest of the stop was very professional and I went on my way with a warning slip.
Oh yeah, Merry Christmas and God Bless.