When you take the subway, bus, or train to work, you may not be aware of the laundry list of items that pose a risk to you and other passengers. However, organizations like the Metropolitan Transportation Authority are on the lookout to ensure public safety and fire prevention. On the New York City Subway, New York City Buses, Long Island Rail Road, Metro-North Railroad, Staten Island Railway or Access-A-Ride, riding personal vehicles like scooters, skates, skateboards, and hoverboards is understandably prohibited. And some rules, like banning the smoking of cigarettes or cigars, are obvious. But some bans are less obvious.