Or rather, kind of illegal. Legal in one sense, illegal in another (and remember: they don't actually hover).

The NYPD's 26th Precinct tweeted on Monday that electric hoverboards are illegal according to the NYC Admin. Code 19-176.2

Later the tweet was deleted. The problem is, Code 19-176.2 actually supports the legality of the hoverboard, as it reads:

1. "For purposes of this section, "motorized scooter" shall mean any wheeled device that has handlebars."
2. "For the purposes of this section, the term "motorized scooter" shall not include electric powered devices not capable of exceeding fifteen miles per hour..."

[anad]

Now, it would appear that hoverboards are fully legal, as they don't have handlebars and most can't reach anywhere close to 15mph. 

But strictly speaking, based on the language presented, hoverboards do not fall under Code 19-176.2. However, according to an NYPD spokesperson, hoverboards are illegal as they are considered motor vehicles that unable to be registered with the Department of Motor Vehicles.

So what's the penalty for riding the hoverboard in the New York City? If you're caught scootin' around the City, an officer may stop you and fine you $200. 

With all those $200 fines, the NYPD could buy their own fleet of hoverboards. Check out the report below.

Check out The Definitive Guide of Proper Subway Etiquette.