In this subchapter:(1) 'Essential need' means a need of a person to operate a motor vehicle:(A) in the performance of an occupation or trade or for transportation to and from the place at which the person practices the person's occupation or trade;(B) in the pursuit of an occupation or trade;(C) for transportation to and from an educational facility in which the person is enrolled; or(D) in the performance of essential household duties.(2) 'Ignition interlock device' means a device that uses a deep-lung breath analysis mechanism to make impractical the operation of a motor vehicle if ethyl alcohol is detected in the breath of the operator of the vehicle.(3) 'Offense relating to the operating of a motor vehicle while intoxicated' has the meaning assigned by Section 49.09, Penal Code. Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.Amended by: Acts 2023, 88th Leg., R.S., Ch. 386 (H.B. 291), Sec. 2, eff. September 1, 2023.