Mass. Gen. Laws ch. 111G, § 6

Whenever transportation to early intervention services is required, the department shall provide transportation with respect to said services. The department shall take appropriate steps to ensure the safety of all persons transported under this section. If the department determines that said persons cannot be transported safely without the assistance of monitors, said transporting shall include provision for monitors. Nothing in this section shall preclude the ability of parents to serve as unpaid monitors when their children are being transported.