This section covers the technical legal stuff: Class 1/2/3, top speed limits, motor watt rules, throttle rules, and when an e-bike starts looking like a moped.
TL;DR (Fast default)
If your setup exceeds common class limits (speed/power/throttle behavior), you may trigger moped-style rules (registration, licensing, different access).
Choose your path
| You’re asking about… | Start here |
|---|---|
| Class 1 vs 2 vs 3 | Class rules & speed limits |
| Throttle legality | Throttle rules by class/state |
| 750W / 1000W / higher watt builds | Watt thresholds & risk areas |
| 28 mph / faster bikes | Speed categories & where they’re restricted |
| DIY kits / modifications | When mods change the legal category |
“Red flag” checklist (fast)
- Sustained high speed in shared spaces
- Very high watt motors
- Moped-like build features (mirrors, plates, VIN-like labeling, etc.)
- Riding where bicycles are already restricted
Start here
- Class rules: https://jieli-electric.com/what-are-e-bike-class-1-2-and-3-regulations/
- US overview: https://jieli-electric.com/the-legalities-of-e-bikes-in-the-us/
All class/speed/watt questions
Back to Laws & Safety Hub: https://jieli-electric.com/laws-safety/