ORS 801.348: “Motor assisted scooter.”

“Motor assisted scooter” means a vehicle that:

      (1) Is designed to be operated on the ground with not more than four wheels;

      (2) Has a foot support or seat for the operator’s use;

      (3) Can be propelled by motor or human propulsion; and

      (4) Is equipped with a power source that is incapable of propelling the vehicle at a speed of greater than 24 miles per hour on level ground and:

      (a) If the power source is a combustion engine, has a piston or rotor displacement of 35 cubic centimeters or less regardless of the number of chambers in the power source; or

      (b) If the power source is electric, has a power output of not more than 1,000 watts.