E Relating to school buses; clarifying the exemption of certain types of school buses from the definition of commercial motor vehicle for traffic regulations purposes; eliminating a certain reference to Minnesota school bus golden orange in the provision restricting use of the yellow color for buses other than school buses; exempting school buses operated by licensed child care providers from the yellow color and school or head start bus related equipment and printing use restrictions under certain conditions; temporarily authorizing the operation of type A school buses by holders of class D drivers licenses without a school bus endorsement under certain conditions, specifying certain training, certification, background check and physical examination requirements (ra, ja)