Governor Maura Healey filed the "Ride Safe Act" to enhance the safety of e-bikes, e-motos, and other micro-mobility equipment. MassBike was an integral part of the Micromobility Commission that came up with the recommendations. It's a largely speed based approach, rather than the name of the device. Transit that is capable of going faster should require safety, like helmets, for riders.
https://www.mass.gov/news/governor-healey-files-ride-safe-act-to-strengthen-public-safety-regulate-e-bikes-mopeds-and-scooters
https://www.bostonglobe.com/2026/05/04/science/newly-filed-legislation-takes-aim-ebikes-scooters-mopeds/
Text of the bill: https://malegislature.gov/Bills/194/S3077