(a) For purposes of this section, 'idle reduction system' means a system that provides heating, cooling, or electrical service to a commercial vehicle's sleeper berth for the purpose of reducing the idling of a motor vehicle.(b) Notwithstanding any provision to the contrary, the maximum gross vehicle weight limit and axle weight limit for any vehicle or combination of vehicles equipped with an idle reduction system shall be increased by an amount necessary to compensate for the additional weight of the idle reduction system.(c) The weight increase under Subsection (b) may not be greater than 550 pounds.(d) On request by an appropriate law enforcement officer or an official of an appropriate regulatory agency, the vehicle operator shall provide proof that:(1) the idle reduction technology is fully functional at all times; and(2) the weight increase is not used for any purpose other than the use of an idle reduction system. Added by Acts 2011, 82nd Leg., R.S., Ch. 390 (S.B. 493), Sec. 2, eff. June 17, 2011.Amended by: Acts 2021, 87th Leg., R.S., Ch. 411 (S.B. 1815), Sec. 4, eff. September 1, 2021.