A few are far-fetched, but most of these notices are shocking in part because they are nearly believable – some may be an accepted reality within the next few years (click to enlarge).

Collected on signsfromthenearfuture, a Tumblr blog, their subjects range from driverless cars and solar roadways to cryogenic stations and hyperloop trains.

Some are clearly tongue-in-cheek commentary on current social behavior and perceived threats to privacy, or based on science-fiction principles unlikely to materialize, but who knows. Others you may be seeing very soon on streets and in other public places (alas, probably not the one about jetpack rentals).