Any employer who knowingly allows, permits, authorizes, or requires an employee to operate a commercial motor vehicle in violation of any law or regulation pertaining to railroad/highway grade crossings shall be subject to a civil penalty of not more than $10,000, which shall be imposed by the Commissioner upon receipt of notification from federal or state motor carrier officials that an employer may have violated this provision, and upon notice to the employer of the charge and a hearing conducted as provided under the Administrative Process Act (§ 2.2-4000 et seq.), to determine whether such employer has violated this provision. Civil penalties collected under this section shall be deposited into the Transportation Trust Fund.