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Speed Limits and Control
- 1/20If you are driving in urban areas of South Dakota, the maximum speed limit is
In South Dakota, the maximum unposted speed limit in urban districts or residential areas is 30 Miles Per Hour (MPH). However, this limit can vary with specific road conditions and posted signage.
When you are driving, you are required to reduce your speed when
Drivers in South Dakota are required to reduce speed when entering curves or areas with poor visibility, such as when roads are slippery from rain or snow, or when approaching other traffic or obstacles.
If you are driving in unposted rural areas of South Dakota
In South Dakota, the maximum unposted speed limit in rural areas is 55 Miles Per Hour (MPH). However, drivers should adjust their speed to match road conditions and traffic flow.
When you approach a stopped school bus with flashing lights in South Dakota
In South Dakota, drivers are required to stop for a school bus with flashing red lights when driving on a two-lane road, regardless of the direction of travel. This law ensures the safety of children getting on or off the bus.
If you are driving on interstate highways in South Dakota, the maximum speed limit is
In South Dakota, the maximum speed limit on interstate highways is 70 Miles Per Hour (MPH) unless otherwise posted.
If you exceed the speed limit in South Dakota
Exceeding the speed limit in South Dakota is illegal at all times, especially in construction zones, where fines are doubled.
If you are towing a trailer, the speed limit is
When towing a trailer, the speed limit in South Dakota is 55 Miles Per Hour (MPH) unless a sign indicates otherwise.
If you are speeding in a construction zone
Speeding in a construction zone in South Dakota can result in a fine of up to $500, depending on the violation.
If you are driving during adverse weather conditions
During adverse weather conditions such as rain, snow, or fog, the maximum speed limit in South Dakota is reduced to 55 Miles Per Hour (MPH) to ensure safe driving.
If you are driving in a school zone, the speed limit is
In South Dakota, the speed limit in a school zone when children are present is 20 Miles Per Hour (MPH) to ensure the safety of students.
If you speed in a school zone in South Dakota
Speeding in a school zone in South Dakota results in a fine and points on your license to ensure public safety.
If you encounter a railroad crossing with flashing signals
In South Dakota, you must stop at least 25 feet from a railroad crossing when the signals are flashing to avoid crossing when a train is approaching.
If you are driving on rural highways in South Dakota
The maximum speed limit on rural highways in South Dakota is 65 Miles Per Hour (MPH), unless otherwise posted.
If you are driving in residential areas
The speed limit in residential areas in South Dakota is 25 Miles Per Hour (MPH), but it can be lower if posted.
If you are driving too fast for conditions in South Dakota
Driving too fast for conditions in South Dakota can result in fines and points added to your driving record.
If you are driving a passenger vehicle on interstate highways, the speed limit is
The maximum speed limit for passenger vehicles on South Dakota’s interstate highways is 70 Miles Per Hour (MPH), unless otherwise posted.
When driving during foggy conditions
During foggy conditions, drivers should slow to a safe speed based on visibility and road conditions, even if it is below the posted speed limit.
If you encounter a stopped emergency vehicle with flashing lights
You are required to move over to the other lane, if possible, when approaching a stopped emergency vehicle with flashing lights to give them space.
If you exceed the speed limit in a construction zone
In South Dakota, exceeding the speed limit in a construction zone results in double fines to ensure worker safety and compliance with road regulations.
If you are driving in a school zone when children are not present
The speed limit in a school zone in South Dakota when children are not present is typically 25 Miles Per Hour (MPH), but it can vary depending on local regulations and signs.