POL Government Elected Officials Auditor Mary Hull Caballero Charter, Code and Policies City Code & Charter Online Code & Charter Title 16 Vehicles and Tra Chapter 16.90 Definitions
16.90.025 Bicycle.

A type of vehicle that:

A. Is designed to be operated on the ground on wheels;

B. Has a seat or saddle for use of the rider;

C. Is designed to travel with not more than three wheels in contact with the ground;

D. Is propelled exclusively by human power; and

E. Has every wheel more than 14 inches in diameter or two tandem wheels either of which is more than 14 inches in diameter.