New York City councilwoman and Manhattan Borough President-elect Gale Brewer says more enforcement is needed for a new ban on electric-powered bikes.

E-bikes, or motorized bikes, are popular with delivery people, but Brewer says her constituents complain that the bikes are often used on sidewalks or bike lanes, and move at high speeds. She sent a letter to the Police Department and the Department of Transportation last week calling for clarification on how they plan to enforce the ban.