(a) When a person registers or renews the registration of a motor vehicle under this chapter, the person may contribute any amount to the evidence testing grant program established under Section 772.00715, Government Code.(b) The department shall provide, in a conspicuous manner, an opportunity to contribute to the evidence testing grant program in any registration renewal system used by the department.(c) If a person makes a contribution under this section and does not pay the full amount of a registration fee, the county assessor-collector may credit all or a portion of the contribution to the person's registration fee.(d) The county assessor-collector shall send any contribution made under this section to the comptroller for deposit to the credit of the evidence testing account established under Section 772.00716, Government Code, at least once every three months. Before sending the money to the comptroller, the department may deduct money equal to the amount of reasonable expenses for administering this section. Added by Acts 2017, 85th Leg., R.S., Ch. 1109 (H.B. 4102), Sec. 1, eff. September 1, 2017.