Effective - 28 Aug 2015, 2 histories
307.128. Motorcycle headlamp modulation permitted, when — labeling requirements — auxiliary lighting. — 1. A headlamp on a motorcycle may be wired to modulate either the upper beam or the lower beam from its maximum intensity to a lesser intensity provided that:
(1) The rate of modulation shall be two hundred forty plus or minus forty cycles per minute;
(2) The headlamp shall be operated at a maximum power for fifty to seventy percent of each cycle;
(3) The lowest intensity at any test point shall not be less than seventeen percent of the maximum intensity measured at the same point;
(4) The modulator switch shall be wired in the power lead of the beam filament being modulated and not in the ground side of the circuit;
(5) Means shall be provided so that both the lower beam and the upper beam remain operable in the event of a modulation failure;
(6) The system shall include a sensor mounted with the axis of its sensing element perpendicular to a horizontal plane. Headlamp modulation shall cease whenever the level of light emitted by a tungsten filament operating at three thousand degrees kelvin is either less than two hundred seventy lux of direct light for upward pointing sensors or less than sixty lux of reflected light for downward pointing sensors. The light is measured by a silicon cell type light meter that is located at the sensor and pointing in the same direction as the sensor. A photo gray card is placed at ground level to simulate the road surface in testing downward pointing sensors;
(7) Means shall be provided so that both the lower and upper beam function at design voltage when the headlamp control switch is in either the lower or upper beam position when the modulator is off.
2. Each motorcycle headlamp modulator not intended as original equipment, or its container, shall be labeled with the maximum wattage, and the minimum wattage appropriate for its use. Additionally, each such modulator shall comply with the provisions of subdivisions (1) to (7) of subsection 1 of this section when connected to a headlamp of the maximum-rated power and headlamp of the minimum-rated power, and shall provide means so that the modulated beam functions at design voltage when the modulator is off. Instructions, with a diagram, shall be provided for mounting the light sensor including location on the motorcycle, distance above the road surface, and orientation with respect to the light.
3. Notwithstanding any other provision of law, subject to the requirements of subsection 4 of this section, a motorcycle may be equipped with, and an operator of a motorcycle may use, the following auxiliary lighting:
(1) Amber and white illumination;
(2) Standard bulb running lights; or
(3) Light-emitting diode pods and strips.
4. Lighting under subsection 3 of this section shall be:
(1) Nonblinking;
(2) Nonflashing;
(3) Nonoscillating; and
(4) Directed toward the engine and the drive train of the motorcycle to prevent interference with the driver's operation of the vehicle.
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(L. 2009 H.B. 253, A.L. 2015 H.B. 650)
Structure Missouri Revised Statutes
Title XIX - Motor Vehicles, Watercraft and Aviation
Chapter 307 - Vehicle Equipment Regulations
Section 307.005 - Light-emitting diodes deemed operating properly, when.
Section 307.010 - Loads which might become dislodged to be secured — failure, penalty.
Section 307.015 - Mud flaps required, certain motor vehicles — violation, penalty.
Section 307.020 - Definitions.
Section 307.035 - Director's decisions final, when — appeal to board — hearing and decisions.
Section 307.040 - When lights required — violation, penalty.
Section 307.045 - Headlamp on motor vehicles — violations, penalty.
Section 307.050 - Headlamps — permissible substitutes, speed limit.
Section 307.055 - Single-beam headlamps — intensity, adjustment — violation, penalty.
Section 307.060 - Multiple-beam headlamps — arrangement — violation, penalty.
Section 307.065 - New vehicles shall have beam indicator — violation, penalty.
Section 307.070 - Dimming of lights, when — violation, penalty.
Section 307.075 - Taillamps, reflectors — violations, penalty.
Section 307.080 - Auxiliary lamps — number — location — violation, penalty.
Section 307.085 - Cowl, fender, running board and backup lamps — violation, penalty.
Section 307.090 - Spotlamps — restrictions, penalty.
Section 307.095 - Colors of various lamps — restriction of red lights, penalty.
Section 307.105 - Limitation on total of lamps lighted at one time — violation, penalty.
Section 307.110 - Parked vehicles — how lighted — exception — violation, penalty.
Section 307.115 - Other vehicles — how lighted — violation, penalty.
Section 307.120 - Penalty for violations.
Section 307.122 - Electronic message devices, prohibited on vehicle, exceptions — penalty.
Section 307.125 - Animal-driven vehicles, lighting requirements — penalty — rulemaking authority.
Section 307.130 - Safety glass defined.
Section 307.135 - Director not to license vehicle without safety glass.
Section 307.140 - Safety glass on vehicles for hire and school buses.
Section 307.145 - Sale of vehicles without safety glass prohibited.
Section 307.150 - List of approved glass.
Section 307.155 - Violation a misdemeanor.
Section 307.160 - Revocation of permit by public service commission.
Section 307.165 - Seat safety belts standard equipment, when — penalty.
Section 307.170 - Other equipment of motor vehicles — violations, penalty.
Section 307.171 - Studded tires, prohibited when — penalty.
Section 307.175 - Sirens and flashing lights, use of, when — permits — violation, penalty.
Section 307.180 - Bicycle and motorized bicycle, defined.
Section 307.183 - Brakes required.
Section 307.185 - Lights and reflectors, when required — standards to be met.
Section 307.188 - Rights and duties of bicycle, electric bicycle, and motorized bicycle riders.
Section 307.190 - Riding to right, required for bicycles and motorized bicycles.
Section 307.191 - Bicycle to operate on the shoulder adjacent to roadway, when — roadway defined.
Section 307.192 - Bicycle required to give hand or mechanical signals.
Section 307.193 - Penalty for violation.
Section 307.196 - Equipment required.
Section 307.198 - All-terrain vehicles, equipment required — penalty.
Section 307.205 - Defined — requirements for operation.
Section 307.207 - Equipment required.
Section 307.209 - Roadway operation, requirements.
Section 307.211 - Violations, penalties.
Section 307.250 - Compact — entered into.
Section 307.255 - Legislative findings.
Section 307.260 - Rules not effective until approved by legislature.
Section 307.265 - Director of revenue to be state's commissioner.
Section 307.275 - State agencies to cooperate with commission.
Section 307.280 - Documents to be filed with secretary of state.
Section 307.285 - Commission to submit budget to commissioner of administration.
Section 307.290 - State auditor may inspect commission's accounts.
Section 307.295 - Executive head defined.
Section 307.353 - No safety inspection required during registration period which exceeds two years.
Section 307.370 - Prohibited acts.
Section 307.402 - Inspection of state-owned vehicles, responsibility for.