Missouri Revised Statutes Title XII. Public Health and Welfare § 194.509. Regulations for nonparticipating vehicle operators--violations, penalty

(1) Drive between the vehicles comprising an organized funeral procession while such vehicles are in motion and have the flashing emergency lights lighted pursuant to subsection 2 of section 194.506, except when required to do so by a law enforcement officer or when such person is operating an emergency vehicle giving an audible or visual signal;

(2) Join a funeral procession for the purpose of securing the right-of-way granted in section 194.506; or

(3) Attempt to pass any vehicle in an organized funeral procession, except where a passing lane has been specifically provided.