Texas Transportation Code - TRANSP § 224.153. High Occupancy Vehicle Lanes Authorized

(a) The department may finance, designate, design, construct, operate, or maintain one or more lanes on a multi-lane highway facility as dedicated high occupancy vehicle lanes on the state highway system.

(b) The department may enter into an agreement with a transit authority under Chapter 451, 452, or 453, a regional mobility authority under Chapter 361, a coordinated county transportation authority under Chapter 460, a municipality, or a transportation corporation for the design, construction, operation, or maintenance of a high occupancy vehicle lane.

(c) The department may authorize a motorcycle or a low-emissions vehicle to use a high occupancy vehicle lane designated under this section regardless of the number of persons on the motorcycle or occupants in the vehicle.

(d) The department may not authorize the use of a high occupancy vehicle lane designed, constructed, operated, or maintained under Subsection (b) by a motorcycle or a low-emissions vehicle that is not occupied by the required minimum number of persons if the use would impair the receipt of federal transit funds.

(d) The department may not authorize vehicles addressed in Subsection (c) to use a high occupancy vehicle lane if such use would violate federal transit or highway funding restrictions.