Tex. Transp. Code § 502.143
An owner may not register the following vehicles for operation on a public highway:
(4) electric bicycles, as defined by Section 664.001.
Transferred, redesignated and amended from Transportation Code, Section 502.0073 by Acts 2011, 82nd Leg., R.S., Ch. 1296 (H.B. 2357), Sec. 102, eff. January 1, 2012.
Acts 2019, 86th Leg., R.S., Ch. 485 (H.B. 2188), Sec. 1, eff. September 1, 2019.