The Department of State Police and all other law-enforcement officers of the Commonwealth who have satisfactorily completed the course in Hazardous Materials Compliance and Enforcement as prescribed by the U.S. Department of Transportation, Research and Special Programs Administration, Office of Hazardous Materials Transportation, in federal safety regulations and safety inspection procedures pertaining to the transportation of hazardous materials, shall enforce the provisions of this article, and any rule or regulation promulgated hereunder. Those law-enforcement officers certified to enforce the provisions of this article and any regulation promulgated hereunder, shall annually receive in-service training in current federal safety regulations and safety inspection procedures pertaining to the transportation of hazardous materials.