Tex. Government Code § 3100.064: DISPLAY ON FLAGSTAFF ON MOTOR VEHICLE.

If the state flag is displayed on a flagstaff on a motor vehicle, the staff should be attached firmly to the chassis or clamped to the right fender. If the flag of the United States and the state flag are displayed on flagstaffs on a motor vehicle:

(1) the staff of the flag of the United States should be clamped to the right fender of the vehicle; and

(2) the staff of the state flag should be clamped to the left fender of the vehicle.

Added by Acts 2001, 77th Leg., ch. 1420, Sec. 7.001, eff. Sept. 1, 2001.