Despite official-looking warnings, California highway motorists won't have their speed regulated by armed drones. San Fransisco's local CBS affiliate KPIX 5 reports that several fake signs have appeared on Bay Area highways, depicting a drone firing a missile along with a "speed enforced by drones" warning. The California Highway Patrol, which has been removing the signs, tells KPIX 5 that it does not, in fact, use drones to hunt down lead-footed drivers. "At CHP we definitely do not have drones," the highway patrol tells KPIX 5. "Along with not having drones we definitely do not have any drones that would fire any type of weaponry."

The CHP tells KPIX 5 that the signs look like the real deal, with professional materials that are "just like the signs that we use on the side of the road for speed limits, and everything else." One of the signs was even reportedly mounted with "tamper-resistant bolts."

It's not clear yet who's behind the prank, but it's not the first time fake drone signs have popped up in the US; in 2011, street artist Essam Attia plastered fake Big Brother-style advertisements throughout Manhattan that depicted NYPD drones launching strikes on fleeing citizens. The NYPD didn't take the situation lightly, and arrested Attia — who now faces 56 counts of criminal possession of a forged instrument and grand larceny possession of stolen property.