Mount Pleasant, SC Mobility & Curb Rules: E-Bike Classes (2026)
Key Facts
- Motor power cap
- 750 watts / 1 horsepower
- Unassisted top speed cap (definition)
- Under 20 mph
- On-road operating speed cap
- 15 mph, § 73.31
- Sidewalk speed cap
- 12 mph, § 73.34
- Helmet mandate
- Riders under 21, § 73.32
Summary
The Town of Mount Pleasant does not sort e-bikes into class 1, 2, or 3 tiers; § 73.01 defines a single E-Bike category capped at 750 watts and 20 mph, and § 73.31 caps on-road speed at 15 mph. Riders under 21 must wear a helmet, and sidewalk riding follows the same rules as bicycles.
ELECTRIC-ASSIST BICYCLES AND BICYCLES WITH HELPER MOTORS ("E-BIKES"). Low-speed electrically assisted bicycles with two or three wheels, each having fully operable pedals and an electric motor of no more than 750 watts, or one horsepower, and a top motor-powered speed of less than 20 miles an hour when operated by a rider weighing 170 pounds on a paved level surface ... Any E-Bike that exceeds 750 watts or one horsepower and produces speeds in excess of 20 miles an hour shall be deemed a moped under this chapter and shall be subject to all regulations applicable to mopeds.
Full Breakdown
R. Part 1512; the motor must disengage when the brakes are applied or the rider stops pedaling, and the manufacturer must permanently label the bike's wattage and speed. 50, including carrying a valid moped operator's or driver's license. 30 gives e-bike riders the same rights and duties as motor vehicle drivers on Town streets. 31 sets a 15 mph operating speed cap regardless of the bike's rated top speed, requires riders to stay on a permanent seat with feet on the pedals or foot pegs, and bars carrying more riders than the bike is designed for.
32 requires anyone under 21 to wear a protective bicycle helmet and requires a front white lamp visible 500 feet and a rear red reflector for nighttime riding. 34 allows sidewalk riding only for children 17 and under (and adults with children seven and under), on Engineering and Development Services-designated shared-use paths at least eight feet wide, on sidewalks next to roads with no bike path, or next to roads posted 30 mph or faster, capped at 12 mph on any sidewalk or shared-use path.
Violations & Fines
Violating any e-bike provision in Chapter 73 is punishable under § 73.99: a fine up to $500 or up to 30 days' imprisonment for an individual, and up to a $500 fine plus possible license suspension or revocation for a corporation, never exceeding the state law penalty for a similar offense.
Frequently Asked Questions
Does Mount Pleasant classify e-bikes by class 1, 2, or 3?
What happens if my e-bike exceeds 750 watts in Mount Pleasant?
Can adults ride e-bikes on Mount Pleasant sidewalks?
Sources & Official References
Other rules in Mount Pleasant
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