Missouri · Missouri Revised Statutes — Traffic Regulations (Ch. 300–307)
Mo. Rev. Stat. (Motor Vehicles) § 304.031: Traffic signal preemption system, use of, permitted when
What this law says, in plain English
Unauthorized use of a traffic signal preemption system is unlawful and constitutes a class B misdemeanor. Only authorized operators for emergency vehicles, buses, and maintenance may use the system.
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