When searching for the legality of HID lights in Texas, I can across a few different answers. This is the best I can do to summarize if HID lights are legal or are not legal in Texas.
§ 547.004. GENERAL OFFENSES. (a) A person commits an
offense that is a misdemeanor if the person operates or moves or, as
an owner, knowingly permits another to operate or move, a vehicle
(1) is unsafe so as to endanger a person;
(2) is not equipped in a manner that complies with the
vehicle equipment standards and requirements established by this
(3) is equipped in a manner prohibited by this
§ 547.3215. USE OF FEDERAL STANDARD. Unless specifically
prohibited by this chapter, lighting, reflective devices, and
associated equipment on a vehicle or motor vehicle must comply
(1) the current federal standards in 49 C.F.R. Section
(2) the federal standards in that section in effect,
if any, at the time the vehicle or motor vehicle was manufactured.
Now the federal standard does not allow for HID with halogen reflectors to be used. This would seem to counter the idea that the retrofit is legal. It would also make it an arrest able offense since it’s not one of the tow citations that you cannot be instantered for (speeding and open container).
Federal Motor Vehicle Safety Standard No. 108 states:
FMVSS No. 108 specifies requirements for original and replacement lamps, reflective devices, and associated equipment. The purpose of this standard is to reduce traffic accidents and deaths and injuries resulting from traffic accidents, by providing adequate illumination of the roadway, and by enhancing the conspicuity of motor vehicles on the public roads so that their presence is perceived and their signals understood, both in daylight and in darkness or other conditions of reduced visibility.