(a) In this section, “medical examiner vehicle” means a motor vehicle that is owned or leased by a governmental entity for use by a medical examiner or an employee of an office of a medical examiner in the performance of the examiner’s or employee’s duties relating to an inquest conducted under Subchapter B, Chapter 49, Code of Criminal Procedure.
(b) A medical examiner vehicle may be equipped with either:
(1) mounted signal lamps that comply with the requirements of § 547.702(c); or
(2) a signal lamp that is temporarily attached to the vehicle roof and flashes red and blue lights visible at a distance of at least 500 feet in normal sunlight.
(c) The operator of a medical examiner vehicle may use the lighting equipment described by Subsection (b) only when:
(1) necessary to warn other vehicle operators or pedestrians of the approach of the medical examiner vehicle; and
(2) operating the vehicle in the course and scope of the operator’s duties relating to an inquest conducted under Subchapter B, Chapter 49, Code of Criminal Procedure.