KFP wrote:30.06 signs are not valid in a public school parking lot?
Nope. 30.06 signs are not valid on any public, government property not specifically listed as banned otherwise.
(e) It is an exception to the application of this section that the property
on which the license holder carries a handgun is owned or leased
by a governmental entity and is not a premises or other place on which
the license holder is prohibited from carrying the handgun under
Section 46.03 or 46.035.
PC §46.03. PLACES WEAPONS PROHIBITED. (a) A person commits
an offense if the person intentionally, knowingly, or recklessly possesses
or goes with a firearm, illegal knife, club, or prohibited weapon
listed in Section 46.05(a):
(1) on the physical premises of a school or educational institution,
any grounds or building on which an activity sponsored by a school or
educational institution is being conducted, or a passenger transportation
vehicle of a school or educational institution, whether the school or
educational institution is public or private, unless pursuant to written
regulations or written authorization of the institution;
...
(c) In this section:
(1) "Premises" has the meaning assigned by Section 46.035.
...
(3) "Premises" means a building or a portion of a building. The
term does not include any public or private driveway, street, sidewalk
or walkway, parking lot, parking garage, or other parking area