A road sign in North Arlington is wishing everyone who drives or walks by a “Happy 420.”

The greeting, on a day that is closely associated with cannabis culture, was likely the result of the same sort of electronic road sign hack that pranksters have used to warn of “Zombies Ahead” or “The British Are Coming.”

A tipster tells us the sign, which is located outside the Madison Community Center on Old Glebe Road, was originally advising drivers of road closures due to water main work nearby.

Photo courtesy James D.