Please consider adding that ratio requirements do not need to be followed during transportation as often there are mixed age ages when transporting children  to/from homes or schools.

22 VAC 40-185-580. Transportation and field trips

F. The staff-to-children ratios of 22VAC40-185-350 B and 22VAC40-185-335 shall be followed on all field trips. The staff-to-children ratios and group requirements need not be followed during transportation of school age children to and from the center…