(2) Rides on a seat in a partially or completely enclosed seating area that is equipped with safety belts and the motor vehicle is designed to be steered with a steering wheel or handlebar.

"Motorcycle" excludes a farm tractor, a power wheelchair, an electric personal assistive mobility device, a motorized foot scooter, an electric-assisted bicycle, and a moped.

(b) "Medium-speed electric vehicle," meaning a self-propelled, electrically powered four-wheeled motor vehicle, equipped with a roll cage or crush-proof body design, whose speed attainable in one mile is more than thirty miles per hour but not more than thirty-five miles per hour and otherwise meets or exceeds the federal regulations set forth in 49 C.F.R. Sec. 571.500;

(c) "Motorcycle," meaning a three-wheeled motor vehicle that is designed (i) so that the driver rides on a seat in a partially or completely enclosed seating area that is equipped with safety belts and (ii) to be steered with a steering wheel or handlebar;

(d) "Multipurpose passenger vehicles," meaning motor vehicles with motive power, except trailers, designed to carry ten persons or less that are constructed either on a truck chassis or with special features for occasional off-road operation;

(e) "Neighborhood electric vehicle," meaning a self-propelled, electrically powered four-wheeled motor vehicle whose speed attainable in one mile is more than twenty miles per hour and not more than twenty-five miles per hour and conforms to federal regulations under 49 C.F.R. Sec. 571.500;

(f) "Passenger cars," meaning motor vehicles with motive power, except multipurpose passenger vehicles, motorcycles, or trailers, designed for carrying ten passengers or less; and

(b) This section does not apply to a vehicle occupant for whom no safety belt is available when all designated seating positions as required under 49 C.F.R. Part 571 are occupied.

(3) Every person sixteen years of age or older operating or riding in a motor vehicle shall wear the safety belt assembly in a properly adjusted and securely fastened manner.

(4) No person may operate a motor vehicle unless all child passengers under the age of sixteen years are either: (a) Wearing a safety belt assembly or (b) are securely fastened into an approved child restraint device.

(5) A person violating this section shall be issued a notice of traffic infraction under chapter 46.63 RCW. A finding that a person has committed a traffic infraction under this section shall be contained in the driver's abstract but shall not be available to insurance companies or employers.

(6) Failure to comply with the requirements of this section does not constitute negligence, nor may failure to wear a safety belt assembly be admissible as evidence of negligence in any civil action.

(7) This section does not apply to an operator or passenger, except for an operator or passenger operating a commercial motor vehicle as defined in RCW 46.32.005, who possesses written verification from a licensed physician that the operator or passenger is unable to wear a safety belt for physical or medical reasons.

(8) The state patrol may adopt rules exempting operators or occupants of farm vehicles, construction equipment, and vehicles that are required to make frequent stops from the requirement of wearing safety belts.

(a) For any person to operate a motorcycle, moped, or motor-driven cycle not equipped with mirrors on the left and right sides which shall be so located as to give the driver a complete view of the highway for a distance of at least two hundred feet to the rear of the motorcycle, moped, or motor-driven cycle: PROVIDED, That mirrors shall not be required on any motorcycle or motor-driven cycle over twenty-five years old originally manufactured without mirrors and which has been restored to its original condition and which is being ridden to or from or otherwise in conjunction with an antique or classic motorcycle contest, show, or other such assemblage: PROVIDED FURTHER, That no mirror is required on any motorcycle manufactured prior to January 1, 1931;

(b) For any person to operate a motorcycle, moped, or motor-driven cycle which does not have a windshield unless wearing glasses, goggles, or a face shield of a type conforming to rules adopted by the state patrol;

(c) For any person to operate or ride upon a motorcycle, motor-driven cycle, or moped on a state highway, county road, or city street unless wearing upon his or her head a motorcycle helmet except when the vehicle is an antique motor-driven cycle or when the vehicle is equipped with all of the following:

(iii) Partially or completely enclosed seating area for the driver and passenger that is certified by the manufacturer as meeting the standards prescribed under 49 C.F.R. Sec. 571.216.

The motorcycle helmet neck or chin strap must be fastened securely while the motorcycle, moped, or motor-driven cycle is in motion. Persons operating electric-assisted bicycles and motorized foot scooters shall comply with all laws and regulations related to the use of bicycle helmets;

(3) For purposes of this section, "motorcycle helmet" means a protective covering for the head consisting of a hard outer shell, padding adjacent to and inside the outer shell, and a neck or chin strap type retention system, with the manufacturer's certification applied in accordance with 49 C.F.R. Sec. 571.218 indicating that the motorcycle helmet meets standards established by the United States department of transportation.

(a) "Arterial" means a public road or highway that is designated or qualifies as a principal or minor arterial under a state or local law, ordinance, regulation, or plan.

(b) "Bicycle" means a human-powered vehicle with metallic wheels at least sixteen inches in diameter or with metallic braking strips and metallic components, not necessarily including the frame or fork, which may be lawfully ridden on a public road or highway.

(c) "Bicycle route" means a route (i) that is designated as a route for bicycle use in a state or local law, ordinance, rule, or plan, or (ii) that provides bicycle access to urban areas that are not reasonably and conveniently accessible through other bicycle routes. The level of existing or projected use by bicyclists is a factor to consider in determining whether a bicycle route provides access that is not reasonably and conveniently available from other bicycle routes. An intersection that provides necessary linkages in a bicycle route or between routes is considered a part of the bicycle route or routes.

(d) "Design complete" means that all major design work for a new vehicle-activated traffic control signal has been completed and that the funding necessary for complete construction of the vehicle-activated traffic control signal has been firmly secured.

(e) "Existing vehicle-activated traffic control signal" means a vehicle-activated traffic control signal that is in use or design complete on or before July 26, 2009.

(B) Rides on a seat in a partially or completely enclosed seating area that is equipped with safety belts and the motor vehicle is designed to be steered with a steering wheel or handlebar.

(ii) "Motorcycle" excludes a farm tractor, a power wheelchair, an electric personal assistive mobility device, a motorized foot scooter, an electric-assisted bicycle, and a moped.

(h) "Routinely and reliably detect motorcycles and bicycles" means that the detection equipment at a vehicle-activated traffic control signal is capable of detecting and will reliably detect a motorcycle or bicycle (i) when the motorcycle or bicycle is present immediately before a stop line or crosswalk in the center of a lane at an intersection or road entrance to such an intersection, or (ii) when the motorcycle or bicycle is present at marked detection areas.

(i) "Vehicle-activated traffic control signal" means a traffic control signal on a public road or highway that detects the presence of a vehicle as a means to change a signal phase.

(a) All existing vehicle-activated traffic control signals that do not currently routinely and reliably detect motorcycles and bicycles must be adjusted to do so to the extent that the existing equipment is capable consistent with safe traffic control. Priority must be given to existing vehicle-activated traffic control signals for which complaints relating to motorcycle or bicycle detection have been received and existing vehicle-activated traffic control signals that are otherwise identified as a detection problem for motorcyclists or bicyclists, or both. Jurisdictions operating existing vehicle-activated traffic control signals shall establish and publicize a procedure for filing these complaints in writing or by email, and maintain a record of these complaints and responses; and

(b) Where motorcycle and bicycle detection is limited to certain areas other than immediately before the stop line or crosswalk in the center of a lane at an existing vehicle-activated traffic control signal, those detection areas must be clearly marked on the pavement at left turn lanes, through lanes, and limited right turn lanes. These detection areas must also be marked to allow a bicyclist to leave a bicycle lane to enter a detection area, if necessary, to cross an intersection. Pavement markings must be consistent with the standards described in the state of Washington's "Manual on Uniform Traffic Control Devices for Streets and Highways" obtainable from the department of transportation.

(3)(a) If at least a substantial portion of detection equipment at an existing vehicle-activated traffic control signal on an arterial or bicycle route is scheduled to be replaced or upgraded, the replaced or upgraded detection equipment must routinely and reliably detect motorcycles and bicycles. For purposes of this subsection (3)(a), "substantial portion" means that the proposed replacement or upgrade will cost more than twenty percent of the cost of full replacement or upgraded detection equipment that would routinely and reliably detect motorcycles and bicycles.

(b) If at least a substantial portion of detection equipment at an existing vehicle-activated traffic control signal on a public road or highway that is not an arterial or bicycle route is scheduled to be replaced or upgraded, the replaced or upgraded detection equipment must routinely and reliably detect motorcycles and bicycles. For purposes of this subsection (3)(b), "substantial portion" means that the proposed replacement or upgrade will cost more than fifty percent of the cost of full replacement or upgraded detection equipment that would routinely and reliably detect motorcycles and bicycles.

(4) All vehicle-activated traffic control signals that are design complete and put in operation after July 26, 2009, must be designed and operated, when in use, to routinely and reliably detect motorcycles and bicycles, including the detection of bicycles in bicycle lanes that cross an intersection.