(a) In this section:
(1) "Escort flag vehicle" means a vehicle that precedes or follows an oversize or overweight vehicle operating under a permit issued by the department for the purpose of facilitating the safe movement of the oversize or overweight vehicle over roads.
(2) "Escort flagger" means a person who:
(A) has successfully completed a training program in traffic direction as defined by the basic peace officer course curriculum established by the Texas Commission on Law Enforcement; and
(B) in accordance with a permit issued by the department under this subtitle, operates an escort flag vehicle or directs and controls the flow of traffic using a hand signaling device or an automated flagger assistance device.
(b) In addition to any other specific requirement under this subtitle, the department may require a person operating under a permit issued by the department under this subtitle to use one or more escort flag vehicles and escort flaggers if required:
(1) by the Texas Department of Transportation; or
(2) for the safe movement over roads of an oversize or overweight vehicle and its load.