MO HB1148

Prohibits drivers aged 21 and younger from using hand-held electronic wireless communications devices while operating a moving motor vehicle, except with hands-free technology or voice-recognition hands-free texting.

Exempts authorized emergency vehicles and permits hand-held device use to report illegal activity, summon emergency help, prevent injury, or relay information between transit/for-hire operators and dispatchers.

Violations are classified as infractions and moving violations subject to point assessment under Missouri traffic law.

Defines key terms including "electronic message" (digital communication like email, text, or instant messages), "hand-held electronic wireless communications device" (cellular phones, smartphones, etc., excluding permanently embedded vehicle devices), and "make or take part in a telephone call" (verbal communication through hand-held devices).

State law preempts local regulation of hand-held device use in vehicles, superseding any county, municipal, or political subdivision ordinances; excludes parked/stopped vehicles, law enforcement/emergency personnel performing official duties, GPS systems, voice-operated technology, and amateur radio operators.