Tex. Transportation Code § 680.011: DEFINITIONS.

In this subchapter:

(1) "Motorcycle" has the meaning assigned by Section 502.001 and includes a motorcycle equipped with a sidecar.

(2) "Preferential lane" means a traffic lane on a street or highway where motor vehicle usage is limited to:

(A) buses;

(B) vehicles occupied by a minimum number of persons; or

(C) car pool vehicles.

Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.