Texas Transportation Code - TRANSP § 521.247. Approval of Ignition Interlock Devices by Department

(a) The department shall adopt rules for the approval of ignition interlock devices used under this subchapter.

(b) The department by rule shall establish general standards for the calibration and maintenance of the devices. The manufacturer or an authorized representative of the manufacturer is responsible for calibrating and maintaining the device.

(c) If the department approves a device, the department shall notify the manufacturer of that approval in writing. Written notice from the department to a manufacturer is admissible in a civil or criminal proceeding in this state. The manufacturer shall reimburse the department for any cost incurred by the department in approving the device.

(d) The department is not liable in a civil or criminal proceeding that arises from the use of an approved device.