In most jurisdictions, including California, the classification of a vehicle as a "motorcycle" is not based on a specific speed requirement. Instead, it is determined by various factors such as engine displacement, design, and functionality.
Generally, a motorcycle is defined as a two- or three-wheeled vehicle with an engine displacement exceeding a certain threshold (usually around 50cc or higher). The specific criteria may vary by jurisdiction, but motorcycles typically have larger engines compared to mopeds or scooters.
It's worth noting that different regions and countries may have their own specific regulations and definitions for classifying motorcycles. For example, some countries have tiered licensing systems that categorize motorcycles based on power-to-weight ratios or engine output.
To accurately determine the classification of a vehicle as a "motorcycle," it's important to consult the specific laws and regulations of the jurisdiction in question. The local Department of Motor Vehicles or relevant government transportation authority should be able to provide precise information regarding motorcycle classification and legal requirements.