CA SB455

Revises definitions for motor-driven cycles, mopeds, and creates a new "low-power moped" category for 2-3 wheeled devices with motors producing less than 3 gross brake horsepower (gas) or 2,250 watts or less (electric) and maximum speed of 30 mph

Requires manufacturers and distributors to apply permanent etchings, engravings, or labels to electric bicycles and low-power mopeds starting July 1, 2026, including brand name, manufacturer, classification, speed, and wattage information

Prohibits vehicles from being sold as electric bicycles if they can provide motor assistance above 28 mph, have motor power exceeding 750 watts, or can be modified to exceed 20 mph on motor power alone

Establishes operating requirements for low-power mopeds: riders under 18 need a class M1 or M2 license, operation limited to roads with 35 mph or lower speed limits, helmets required, and prohibited from sidewalks and bikeways

Requires retailers or manufacturers to notify customers in writing if products sold in the previous 5 years as electric bicycles no longer meet the legal definition as of January 1, 2026