Section 071-81-6 - Prohibitions for School Transportation1. Alcohol use and possession are prohibited in school buses.2. Marijuana use and possession are prohibited in school buses.3. Tobacco use and possession are prohibited in school buses. 4. Weapons use and possession are prohibited in school buses. A. There is an exception for on duty law enforcement and military officials.05- 071 C.M.R. ch. 81, § 6