- Class 1
- Illinois law recognizes Class 1 as pedal-assist only, with assistance ending at 20 mph and motor power capped at 750 watts.
- Class 2
- Illinois defines Class 2 as throttle-capable electric bicycles with assistance ending at 20 mph.
- Class 3
- Illinois defines Class 3 as pedal-assist only up to 28 mph and requires additional features compared with Class 1/2.
- Helmet laws
- Illinois does not impose a single statewide adult e-bike helmet requirement in statute; local rules and safety policies may still apply.
- Age restrictions
- Illinois sets a minimum operator age for Class 3 e-bikes under the vehicle code.
- Road access
- Qualifying e-bikes may use bike lanes and roads where bicycles are allowed.
- Trail access
- Class 3 use is more limited on certain paths and trails unless locally authorized; Class 1/2 access can also be modified by local agencies.
- Sidewalk rules
- Municipal codes regulate sidewalk riding, including major cities such as Chicago.
- Important notes
- Primary reference: 625 ILCS 5/11-1517. Chicago, Cook County forest preserves, and lakefront trails layer local rules on top of state law. Educational summary only—not legal advice.