Conn. Agencies Regs. § 14-137-81
Any ambulance which transports a child six years of age and under or weighing less than sixty pounds on the highways of this state shall provide and require the child to use a child restraint system meeting the standards of section 14-100a-1 of the Regulations of Connecticut State Agencies, or if the child is seven years of age or older and weighing sixty or more pounds, shall either provide and require the child to use an approved child restraint system or require the child to use a seat safety belt in accordance with subsection (d) of section 14-100a of the Connecticut General Statutes. This section shall not apply where it is medically inadvisable to use any such restraint system or seat safety belt, or where the child is being transported as a patient in the patient compartment of the ambulance.
Conn. Agencies Regs. § 14-137-81