Light Bars & LED Lighting in South Dakota
South Dakota permits three auxiliary driving lamps but only if mounted 12 to 24 inches above the surface — a narrow window that a roof or upper-bumper bar cannot meet. No cover is required.
Verified against primary sources · August 2026
What the law says
No auxiliary driving lamp other than a fog lamp may be lit while the headlamps are on low beam. Contrary to widely repeated advice, no cover is required in this state — the rule is simply that the lamps are off on the highway. Mounting a light bar is legal everywhere; what states regulate is using it on public roads, and the usual constraint is a mounting-height ceiling plus a per-type lamp count.
Specific Limits
- Use rule
- no auxiliary driving lamp other than a fog lamp may be lit while headlamps are on low beam
- Max lamps
- 3 auxiliary driving lamps mounted 12-24 in above the surface
- Cover required
- No
Frequently Asked Questions
Are light bars & led lighting legal in South Dakota?
What are the exact light bars & led lighting limits in South Dakota?
Street-legal light bars & led lighting picks
Gear that helps you mod without a ticket in South Dakota.
Required on the road in Pennsylvania, Michigan, and Virginia — but check your state first: Illinois and Kentucky prohibit tinted lens covers.
Shop on AmazonHousings with SAE/DOT markings are what inspectors look for.
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