R.I. Gen. Laws § 31-23-42: First-aid kit and heating equipment in school bus.

Every school bus as defined in § 31-1-3 shall be equipped with a first-aid kit containing those articles and appliances generally included in an approved American Red Cross first-aid kit used in the administration of first-aid treatment. Every school bus shall also be equipped with an operable system for completely and adequately heating the bus while transporting children.