§ 321.409 — Mandatory lighting equipment

Iowa § 321.409

• Jurisdiction: Iowa
• Title VIII: TRANSPORTATION
• Ch. 321: MOTOR VEHICLES AND LAW OF THE ROAD

Text

1. Except as otherwise provided in this chapter, the headlamps or the auxiliary driving
lamp or the auxiliary passing lamp or combination thereof on motor vehicles other than
motorcycles or motorized bicycles shall be so arranged that the driver may select at will
betweendistributionsoflightprojectedtodifferentelevationsandthelampsmay, inaddition,
be so arranged that selection can be made automatically, subject to the following limitations:
a. There shall be an uppermost distribution of light, or composite beam, so aimed and of
sufficient intensity to reveal persons and vehicles at a distance of at least three hundred fifty
feet ahead for all conditions.
b. There shall be a lowermost distribution of light, or composite beam so aimed and of
sufficient intensity to reveal persons and vehicles at a distance of at least one hundred feet
ahead. On a straight level road under any condition of loading none of the high-intensity
portion of the beam shall be directed to strike the eyes of an approaching driver.
2. Every new motor vehicle, other than a motorcycle or motorized bicycle which has
multiple-beam road-lighting equipment shall be equipped with a beam indicator, which shall
be lighted whenever the uppermost distribution of light from the headlamps is in use, and
shall not otherwise be lighted. The indicator shall be so designed and located that when
lighted it will be readily visible without glare to the driver of the vehicle.

Legislative History

[C24, 27, 31, 35, §5049, 5052; C39, §5034.18 – 5034.22; C46, 50, 54, §321.409 – 321.413; C58, 62, 66, 71, 73, 75, 77, 79, 81, §321.409]