According to this news blog focusing on Sheepshead Bay the NYPD has put out a flier with this text:
In an effort to ensure the safety of the motorists and pedestrians of New York City, the NYPD would like to advise citizens of the rules and regulations related to specific motorized devices.
The following motorized devices cannot be registered within New York State and therefore these devices cannot be operated on the highways, public streets or sidewalks of New York State.
- Motorized Scooters
- Dirt Bikes
- Mini Bikes
- Motor Assisted Bicycles - This includes electric powered bicycles
Operation of any of these devices on any highway, street, sidewalk, parking lot or any area that allows public motor vehicle traffic is strictly prohibited.
Use of these devices subject the operator to summons and/or arrest as well as confiscation of the motorized device. Please be considerate of the safety of your fellow motorists and pedestrians.
The NYPD Thanks You For Your Cooperation.