An Act relative to mobile carrying devices

This bill defines "mobile carrying devices" (like delivery robots) in Massachusetts law and sets rules for their use. It specifies these devices must weigh under 90 pounds, move at 12.5 mph max, operate only on sidewalks/crosswalks with an active owner monitoring, and have a controlled stop system. The bill requires owners to ensure devices follow traffic signals, avoid interfering with pedestrians, and not carry hazardous materials. It classifies violations as infractions and grants devices pedestrian-like rights (with yielding to pedestrians), directly affecting owners of these devices and local authorities managing sidewalk use.