Headlights are required, day or night, when visibility is less than ____ feet.
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500
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100
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300
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Explanation
In Iowa, the law requires drivers to use their headlights from sunset to sunrise or whenever visibility is 500 feet or less. Do not use parking lights or daytime lights as a replacement. Headlights do a better job. Remember to keep your headlights clean and in good condition.
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Other questions in the same category: Proper Use of Windshield Wipers and Headlights
When driving at night, drivers should NOT:You should dim your lights for oncoming vehicles or when you are within 300 feet of a vehicle:Bright lights must be dimmed _____ feet before meeting an oncoming vehicle.Drivers should use high beam headlights when:Dim your headlights for oncoming vehicles or when you are within 300 feet of a vehicle:If an approaching driver does not dim the headlights, you should:Drivers must dim their high beam headlights when within _____ of an oncoming vehicle.You must dim your headlights within ______ of vehicle you are following.By law, headlights must be turned on:What does it mean if an oncoming driver flashes headlights at you during a period of low visibility?
This question appears in the following DMV practice tests: