N.M. Admin. Code § 18.21.5.21
Signs shall not be placed with illumination that interferes with the effectiveness of any official traffic sign or device. Signs shall not contain, include or be illuminated by flashing, intermittent or moving light or lights (except that part necessary to give public service information such as time, date, temperature, weather or similar information). The term flashing lights is not limited to actual lighting, and includes stationary and moving reflective disks and rotating slats that reflect light in a flashing or moving manner, and that create the effect of flashing or moving light. No sign shall cause beams or rays of light of such intensity or brilliance to be mistaken for a warning or danger signal as to cause glare or impair the vision of any driver's operation of a motor vehicle.
N.M. Admin. Code § 18.21.5.21