(a) Except as provided by Subsections (b) and (c), a vehicle combination operating under a permit under this subchapter may operate on a federal interstate highway or a state, county, or municipal road, including a frontage road adjacent to a federal interstate highway, if the truck-tractor displays a sticker required by Section 623.422 and the vehicle combination does not exceed the maximum axle or gross weight applicable to the combination under the terms of the permit.(b) A permit issued under this subchapter authorizes the operation of a truck-tractor and semitrailer combination only on highways and roads approved by the Texas Department of Transportation.(c) A permit issued under this subchapter does not authorize the operation of a truck-tractor and semitrailer combination on a county road or bridge for which a maximum weight and load limit has been established and posted under Section 621.301. Added by Acts 2017, 85th Leg., R.S., Ch. 750 (S.B. 1383), Sec. 2, eff. January 1, 2018.Redesignated from Transportation Code, Section 623.404 by Acts 2019, 86th Leg., R.S., Ch. 467 (H.B. 4170), Sec. 21.001(68), eff.

17, 85th Leg., R.S., Ch. 750 (S.B. 1383), Sec. 2, eff. January 1, 2018.Redesignated from Transportation Code, Section 623.404 by Acts 2019, 86th Leg., R.S., Ch. 467 (H.B. 4170), Sec. 21.001(68), eff. September 1, 2019.Amended by: Acts 2019, 86th Leg., R.S., Ch. 467 (H.B. 4170), Sec. 21.002(22), eff. September 1, 2019.