E-bikes and speed pedelecs in South Dakota (2026)
Last reviewed: 9 October 2026
In short: South Dakota has three electric bicycle classes with a motor of 750 W or less and assistance to 20 mph (classes I and II) or 28 mph (class III). A person must be 16 to operate a class III machine, and class III operators under 18 and all class III passengers need a helmet. An electric bicycle is not a motor vehicle; on sidewalks, riders must yield to pedestrians.
| Rule | What applies |
|---|---|
| Legal classRiding on public roads | Own e-bike class system (class 1, 2 or 3) [1] |
| Assistance stops atRiding on public roads | 20 mph [1] |
| Minimum ageRiding on public roads | A person must be at least 16 to operate a class III electric bicycle. A younger person may ride as a passenger if the bicycle is designed to accommodate one. [1] |
| HelmetRiding on public roads | A person under 18 operating a class III electric bicycle, and any passenger on a class III electric bicycle of any age, must wear a properly fitted and fastened bicycle helmet. [1] |
| LicenceRiding on public roads | An electric bicycle is excluded from the definitions of motor vehicle, motorcycle and moped. [2] |
| Plate and insuranceRiding on public roads | An electric bicycle is excluded from the definitions of motor vehicle, motorcycle and moped. [2] |
| Cycle pathsRiding on public roads | Class I and class II may be operated on any bicycle path or multi-use path unless a governmental entity prohibits it. Class III may not, unless the path is within or adjacent to a highway or the governmental entity expressly permits it. [1] |
| E-bike classesRiding on public roads | Three classes: class I (pedal assist) and class II (motor can propel alone) stop assisting at 20 mph, class III (pedal assist) at 28 mph. Class III: minimum age 16 to operate. [1] |
| Maximum motor powerRiding on public roads | The electric motor must be 750 watts or less. [1] |
| Riding on the pavement (sidewalk)Riding on public roads | A bicycle rider on a sidewalk has the rights and duties of a pedestrian, must yield to pedestrians, give an audible signal before passing and stop before entering a crosswalk or highway. An electric bicycle is a bicycle under this chapter. [1] |
Notes
- Section 32-20B-9 defines the electric bicycle as having a motor of 750 W or less. Class I and class II stop assisting at 20 mph and class III at 28 mph.
- Chapter 32-20B names no helmet duty for class I or class II electric bicycles.
- The motor vehicle definition (32-14-1(17)) and the moped and motorcycle definitions (32-20-1) each exclude an electric bicycle. Driver licence rules in 32-20-2 apply to motorcycles and mopeds.
Sources
- South Dakota Legislature: South Dakota Codified Laws, chapter 32-20B, Bicycle Regulation (consulted 9 October 2026) · all sources
- South Dakota Legislature: South Dakota Codified Laws, chapter 32-20, Motorcycle Regulation (section 32-20-1) (consulted 9 October 2026) · all sources
South Dakota and neighbouring states
| State | Legal class | Minimum age | Helmet | Licence | Plate and insurance | Cycle paths |
|---|---|---|---|---|---|---|
| South Dakota | Three classes | Class III: 16 | Class III | Not a motor vehicle | Not a motor vehicle | Class III restricted on paths |
| Iowa | Class 1-3, a bicycle | Class 3: 16 | ⚠ Not yet verified | Not a motor vehicle | Not a motor vehicle | Where bikes are allowed; class 3 20 mph |
| Minnesota | Class 1, 2, 3 (bicycle) | 15 years | ⚠ Not yet verified | Not required | No registration | Allowed, local limits |
| Montana | Bicycle (one class) | ⚠ Not yet verified | ⚠ Not yet verified | Not a motor vehicle | Not a motor vehicle | ⚠ Not yet verified |
| North Dakota | Three classes | ⚠ Not yet verified | Class 3, under 18 | Not a motor vehicle | Not a motor vehicle | Allowed unless prohibited |
| Nebraska | Class I, II, III (bicycle) | ⚠ Not yet verified | ⚠ Not yet verified | Not required | Not a motor vehicle | ⚠ Not yet verified |
| Wyoming | Three classes | ⚠ Not yet verified | ⚠ Not yet verified | Exempt | Exempt | Local or agency rules apply |
More rules in South Dakota
- CannabisPossession for personal use: Criminal offence (misdemeanour up to 2 oz)
- Car speed limitsBuilt-up areas: 25 mph unposted · Outside built-up areas (single carriageway): 65 mph; 55 mph township roads
- Minimum age for a car driving licenceMinimum age for a car licence: 16 (operator's licence) · Earliest age to drive a car supervised: 14 (instruction permit)
- FireworksConsumers may buy and use category F2 fireworks: Yes
- Knives and pepper sprayFolding pocket knives: Only concealment with felony intent
- Statutory minimum wageNational statutory minimum wage: Yes (state law) · Current adult minimum wage (gross): $11.85 per hour
- Using a mobile phone while drivingHolding a phone while driving banned: No (calls allowed) · Hands-free use: Allowed
- Seat belts and child seatsSeat belt compulsory in front seats: Yes · Seat belt compulsory in rear seats: Only passengers aged 5 to 17
- Tobacco and nicotine age limitsMinimum age to buy tobacco: 21 · Minimum age to buy e-cigarettes: 21
- Drinking age and alcohol salesMinimum age to buy beer and wine: 21+ (purchase, possess, consume) · Minimum age to buy spirits: 21+ (purchase, possess, consume)
- Drink-driving limitsBlood alcohol limit for ordinary drivers: 0.08% · Lower limit for novice or young drivers: 0.02% (under 21)
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.