The following words and phrases, when used in this chapter, shall for purposes of this chapter have the meanings respectively ascribed to them in this section:

"Helmet" means a head covering that meets or exceeds safety standards adopted by Standard Z-90.4 set by the American National Standards Institute (ANSI), or the Snell Foundation, or such subsequent nationally recognized standard for bicycle helmet performance as the city council may adopt.

"Modified or enhanced" means to alter the settings, displacement/horsepower or muffler effect to achieve greater power and/or performance than provided when the unit was delivered from the factory for sale.

"Motorized foot scooter" means a device with no more than two twelve-inch or smaller diameter wheels that has handlebars, is designed to be stood or sat upon by the operator, and is powered by an internal combustion engine or electric motor that is capable of propelling the device with or without human propulsion.

"Operate in a negligent manner" means the operation of the device described in this section in such a manner as to endanger or be likely to endanger any person or property. Examples of operating in a negligent manner include, but are not limited to, failure to obey all traffic control devices, and failure to yield right-of-way to pedestrians and/or vehicular traffic. (Ord. 2004-39 § 1 (part), 2004).