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South Dakota
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Alerts
No major alerts at this time.
Construction/Conditions 
866-697-3511
Federal Highway Admin
605-224-7326
Cell Emergency Number
911
Time Zone
Central and Mountain
Speed Limits
Rural Interstates Cars: 75, Trucks: 75
Urban Interstates Cars: 75, Trucks: 75
Other Roads Cars: 70, Trucks: 70
Urban Interstates Cars: 75, Trucks: 75
Other Roads Cars: 70, Trucks: 70
Work Zone Special Limits
Speeding, Double original fine (up to $500) or 30 days jail, or both, Workers Must Be Present, Signs Must Be Present
Rest Area Overnight Parking
Parking up to 3 hours
State Handheld Device Ban
No
State Texting Ban Laws
Yes
Seat Belt Laws
>18 in Front Seats, $25
Sobriety Checkpoints
Yes, Weekly, Upheld under state and Federal Constitution
High Blood Alcohol Content
0.17
Open Container Law
Yes
Motorcycle Helmet Laws
under 18
Bicycle Helmet Laws
no law
Gun Law Simple Summary
All guns must be clearly visible.
Shoot First/Stand Ground Law
Yes - Law permits deadly force in public places with no duty to retreat
Radar Detectors
Legal
Diesel Tax (State and Federal)
0.484
Truck Access Policies
unlimited mi
Unless posted
Unless posted
Triple Towing
Yes
Tow Brake Laws Towing
3,000 lbs - auxiliary braking system is required
See Restricted Routes See Hazmat Routes See Idling Laws
