South Dakota e-bike laws
Last checked Oct 23, 2026 ยท By EbikePost editors
Short answer
Three-class system: yes. Class 3: Class III means pedal-assist only that stops assisting at 28 mph (SDCL 32-20B-9). A Class III bike must have a working speedometer, and may not be ridden on a bicycle or multi-use path unless the path is next to a road or the path's governing entity expressly allows it.
| Minimum age | Class III: operator must be at least 16 (younger riders may be passengers on a bike built to carry one). No statewide minimum age stated for Class I or II. |
|---|---|
| Helmets | Class III: operators under 18 and all passengers of any age must wear a properly fitted and fastened bicycle helmet. No statewide e-bike helmet rule for Class I or II in the chapter. |
| Bike paths | Class I and II may use bicycle and multi-use paths unless the governing entity prohibits it. Class III is restricted as described above. |
| Roads | E-bikes are treated as vehicles/bicycles under SDCL chapter 32-20B; not classed as motor vehicles. |
| Sidewalks | The e-bike sections do not address sidewalks; general bicycle rules in 32-20B apply. |
Labeling of class, top assisted speed and wattage is required on new e-bikes. Local governments may restrict paths and trails.
StatuteChecked Oct 23, 2026
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This is general information, not legal advice.