After further review......I jumped the gun !! Here is a correction from that same transportation code : (2) "Motor assisted scooter":
(A) means a self-propelled device with:
(i) at least two wheels in contact with the ground during operation;
(ii) a braking system capable of stopping the device under typical operating conditions;
(iii) a gas or electric motor not exceeding 40 cubic centimeters;
(iv) a deck designed to allow a person to stand or sit while operating the device; and
(v) the ability to be propelled by human power alone; and
(B) does not include a pocket bike or minimotorbike.
(3) "Pocket bike or minimotorbike" means a self-propelled vehicle that is equipped with an electric motor or internal combustion engine having a piston displacement of less than 50 cubic centimeters, is designed to propel itself with not more than two wheels in contact with the ground, has a seat or saddle for the use of the operator, is not designed for use on a highway, and is ineligible for a certificate of title under Chapter 501. The term does not include:
(A) a moped or motorcycle;
(B) an electric bicycle or motor-driven cycle, as defined by Section 541.201;
(C) a motorized mobility device, as defined by Section 542.009;
(D) an electric personal assistive mobility device, as defined by Section 551.201; or
(E) a neighborhood electric vehicle.
this is under subchapter D. Boy those attorneys and their laws. The definition that seems to fit is a Pocket bike or Minimotorbike.
Here's another interesting link on the subject :
Texas Mini Motorcycle Laws | eHow.com
So.....a motor-assisted bicycle is =or<40 cc. Minimotorbike is between 40-50 cc. then there's the motor assisted scooters and moped. SHEESH!!