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South Dakota e-bike and e-trike laws

✓ Last verifiedVerified Sep 2026Every rule links to the statute or state agency page
In short

Yes. South Dakota law defines an e-bike as 'a bicycle or a tricycle' with pedals and a motor of 750 watts or less, so a pedal e-trike needs no license, plate or insurance. Ride it on roads and on bike paths (Class I and II) unless the local agency says no. Since 2025 you can ride a pedal-assist (Class I) e-trike on the Mickelson Trail.

Does an e-trike count as an e-bike here? Yes.
License
No driver's license is needed: an electric bicycle is expressly excluded from 'motor vehicle', 'moped' and 'motorcycle'.
Registration
No state registration, title or insurance is required because an e-bike is not a motor vehicle, moped or motorcycle under the title/registration and financial-responsibility definitions.
Helmet
Riders under 18 on a Class III e-bike, and all passengers on a Class III e-bike, must wear a bicycle helmet; there is no state helmet rule for Class I or II. (Class 3)
Minimum age
You must be at least 16 to operate a Class III e-bike; younger people may ride as a passenger on one built for passengers. No state minimum age for Class I or II. (Class 3)
Where you can ride
E-bikes are 'vehicles' and may be ridden on roads, keeping close to the right-hand curb like other bicycles.
Sidewalks
State law lets bicyclists ride on sidewalks with pedestrian rights and duties (yielding to pedestrians); e-bikes are defined as bicycles/tricycles, but cities may restrict sidewalk riding.
Three wheels

Does an e-trike count as an e-bike?

Yes
“the term, electric bicycle, means a bicycle or a tricycle that is equipped with a seat or saddle, with operable pedals for propulsion, and with an electric motor of seven hundred fifty watts or less.”
SDCL 32-20B-9 ↗
Classes

The e-bike classes

Class 1
Up to 750WAssist to 20 mphNo throttle
SDCL 32-20B-9 ↗
Class 2
Up to 750WAssist to 20 mphThrottle allowed to 20 mph
SDCL 32-20B-9 ↗
Class 3
Up to 750WAssist to 28 mphNo throttle
SDCL 32-20B-9 ↗
Outside the classes
Treated as a moped or motorcycle.
driver's license or permitregistrationtitleinsurance
A 'moped' is a motor-driven cycle with two or three wheels and 'motorcycle' includes 'bicycles with a motor attached' and 'motor-operated vehicles of the bicycle or tricycle type'; both exclude electric bicycles. So an e-trike over 750 W (or faster than the class limits) falls into moped/motorcycle rules. Moped riders need a valid driver license or permit (32-20-2); motorcycles need a license with motorcycle certification. As motor vehicles they are subject to registration/title (ch. 32-3, 32-5) and financial responsibility; the registration/insurance specifics for mopeds were not separately verified.
Trikes in our guide

How the trikes we list are treated in South Dakota

136 of the 191 trikes we list fit South Dakota's e-bike rules on their published figures. 11 need checking before you buy, and 44 don't publish enough to tell. We check motor power, top speed and the stated class. Not legal advice.

Show the 136 that fit the rules
The rules

Every rule, with its source

License
Registration
  • No state registration, title or insurance is required because an e-bike is not a motor vehicle, moped or motorcycle under the title/registration and financial-responsibility definitions. SDCL 32-3-1(15)-(16); 32-35-1(6) ↗
Helmet
  • Class 3 Riders under 18 on a Class III e-bike, and all passengers on a Class III e-bike, must wear a bicycle helmet; there is no state helmet rule for Class I or II. SDCL 32-20B-14 ↗
Minimum age
  • Class 3 You must be at least 16 to operate a Class III e-bike; younger people may ride as a passenger on one built for passengers. No state minimum age for Class I or II. SDCL 32-20B-13 ↗
Where you can ride
Sidewalks
  • State law lets bicyclists ride on sidewalks with pedestrian rights and duties (yielding to pedestrians); e-bikes are defined as bicycles/tricycles, but cities may restrict sidewalk riding. SDCL 32-20B-2, 32-20B-3 ↗
Bike paths and trails
  • Class 1 Class I and II e-bikes may use any bicycle path or multi-use path unless the government body in charge prohibits them. SDCL 32-20B-12 ↗
  • Class 3 Class III e-bikes may not use bike or multi-use paths unless the path is within/next to a road or the managing agency expressly allows it; they may use natural-surface nonmotorized trails unless restricted. SDCL 32-20B-12 ↗
State parks
  • Class 1 Since 2025, Class I e-bikes (pedal-assist only, no throttle) are allowed on the George S. Mickelson Trail in the Black Hills; Class II and III remain barred there as motorized vehicles. SDCL 41-17-27 (as amended by 2025 SB 79) ↗
Labels
  • Manufacturers/distributors must put a permanent label showing class, top assisted speed and motor wattage; anyone who modifies speed or propulsion must update the label. SDCL 32-20B-10 ↗
Also good to know
  • Class 3 A Class III e-bike must have a working speedometer. SDCL 32-20B-15 ↗
  • The motor must shut off when the rider stops pedaling or applies the brakes (the statute text does not carve out Class II throttles, an apparent drafting conflict). SDCL 32-20B-11 ↗
Changes and local rules

What's new, and what cities add

Statutes and sources
SDCL ch. 32-20B (Bicycle Regulation, incl. e-bike §§ 9-15) ↗SDCL 32-14-1 (traffic definitions) ↗SDCL 32-20-1 and 32-20-2 (moped/motorcycle definitions and licensing) ↗2025 SB 79 enrolled text (Mickelson Trail) ↗
What we couldn't confirm from official sources (3)
  • South Dakota Game, Fish and Parks administrative rules on e-bikes in other state parks/recreation areas were not reviewed.
  • Effective date of 2025 SB 79 assumed to be July 1, 2025 (SD default); the enrolled bill has no specific date.
  • City sidewalk bans (e.g., Sioux Falls, Rapid City downtown) not reviewed.

This page explains the law in plain language. It is not legal advice. Cities, counties and park agencies can add their own rules; check posted signs and confirm with your state before you ride.

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