South Dakota Headlight & Wiper Law
Lights on from sunset to sunrise, and any time you cannot make out a person 200 feet ahead (SDCL 32-17-4). That 200-foot trigger is unusually short, so heavy rain or a snow squall trips it fast. No standalone wiper statute here, but the visibility rule covers the same weather. A violation is a Class 2 misdemeanor. Use low beams, and turn the switch fully on - DRLs leave your tail lamps dark.
When you light up in South Dakota
Lights on from sunset to sunrise, and any time you cannot make out a person 200 feet ahead (SDCL 32-17-4). That 200-foot trigger is unusually short, so heavy rain or a snow squall trips it fast. No standalone wiper statute here, but the visibility rule covers the same weather. A violation is a Class 2 misdemeanor. Use low beams, and turn the switch fully on - DRLs leave your tail lamps dark.
Night, low visibility, and daytime
- NIGHT: sunset to sunrise. LOW VISIBILITY: any time there is not sufficient light to render a person on the highway clearly discernible at 200 feet ahead (SDCL 32-17-4) - one of the shortest triggers in the country, far below the usual 500 or 1,000 feet.
- Work zone: no statewide daytime work-zone headlight statute - posted 'Lights On' signs create the duty. Designated stretch: signed sections govern by sign. DRL: South Dakota does not require daytime running lights, and DRLs do NOT meet 32-17-4 - they leave your rear and marker lamps dark. Turn the switch to full headlamps, not AUTO/DRL.
South Dakota Headlight Law FAQ
Do you need headlights when using wipers in South Dakota?
When are headlights required in South Dakota?
What is the headlight fine in South Dakota?
Reference information for planning, not legal advice. Traffic laws change and this can be out of date, so always confirm the current statute and obey posted signs before you rely on it. Last reviewed July 2026. Source: https://sdlegislature.gov/Statutes/32-17-4. See our Terms & Disclaimer.
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