Tex. Local Government Code § 341.011: SPECIAL POLICE FORCE IN TYPE A GENERAL-LAW MUNICIPALITY.

(a) The mayor of a Type A general-law municipality shall summon as many residents as the mayor considers necessary to serve as a special police force if the mayor considers the force necessary:

(1) to enforce the municipality's laws, avert danger, or protect life or property;

(2) because of riot, outbreak, calamity, or public disturbance; or

(3) because of threat of serious violation of law or order, of outbreak, or of other danger to the municipality or its inhabitants.

(b) The mayor may issue the summons by:

(1) proclamation or other order addressed to the residents of the municipality generally or to the residents of a ward or other subdivision of the municipality; or

(2) personal notice.

(c) A special police force has the powers of the regular police force of the municipality.

(d) A special police force is subject to the orders of the mayor and shall perform the duties required by the mayor.

Acts 1987, 70th Leg., ch. 149, Sec. 1, eff. Sept. 1, 1987.