After banning hoverboards from New York City's subways, trains, and busses last month, the Metropolitan Transportation Authority has begun rolling out new ads, first spotted by Gothamist, to make sure you get the message. The new ads make it clear that passengers cannot transport or ride hoverboards in any manner on MTA-controlled transit, stating "hoverboards may be the latest fad, but they are not safe because they have the potential to catch fire."
the government had to make this sign to hang inside the bus pic.twitter.com/bnyc9aNncv— Dale W Eisinger (@daleweisinger) February 25, 2016
Hoverboards keep exploding thanks to faulty lithium-ion batteries. Given the increased risk of physical harm to bystanders and that hoverboards have been banned from every major American airline, the US Postal Service won't ship them by plane, and Amazon has pulled hoverboards from its online store multiple times, this ban shouldn't come as a surprise.