Subsection (a) of section 13B of chapter 90 of the General Laws, as appearing in the 2020 Official Edition, is hereby amended by inserting after the third sentence the following sentence:- No operator of a motor vehicle shall record or broadcast video of themselves on a mobile electronic device; provided, however, subject to the provisions of section 99 of chapter 272, nothing in this sentence shall prevent the use of a mounted electronic device to continuously record or broadcast video for the purpose of monitoring traffic outside or passengers within the motor vehicle; provided further, that nothing in this sentence shall abrogate or be construed to diminish, restrict or abrogate any right to record or broadcast that is otherwise protected by state or federal law; and provided further, that an operator may record or broadcast video in an emergency or exigent circumstance, or when it is so clearly in the public interest as to override the public safety purpose of this sentence.