No person shall mount or display any lighting device which does not comply with Federal Motor Vehicle Safety Regulations, 49 CFR Part 571, unless specifically allowed by M.G.L. c. 90, §7. Such prohibited devices shall include, but not be limited to, neon undercarriage lighting.

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No motor vehicle so operated shall mount or display a flashing, rotating or oscillating light in any direction except pursuant to section seven E of this chapter; provided, however, that this shall not apply to the use of rear directional signals nor to the proper use of vehicle hazard warning signals as provided for by this section. [...]

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Every motor vehicle registered in the commonwealth shall be equipped with a device to permit the front and rear directional signals to flash simultaneously, said device to be operated only when the vehicle is disabled or stopped in the event of emergency on or at the side of any way.

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No motor vehicle operated pursuant to section seven other than fire apparatus, ambulances, vehicles specified in subsection (b) of section 50 of chapter 33, school buses, vehicles specified in section seven D used for transporting school children, and vehicles specified in section seven I shall mount or display a flashing, rotating or oscillating red light in any direction [...]

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No motor vehicle, as hereinbefore provided, requiring a permit from the registrar, shall mount or display a blue light on such vehicle until proper application has been made