Denver has received a federal grant to fund a three-dimensional billboard in the city's downtown that features an image of a mangled car resembling a giant joint as part of a statewide effort to curb marijuana-impaired driving.

The Denver Post reports that the $35,000 billboard, which is 28 feet tall and glows at night, includes a message that reads: "Hits Lead to Hits, Don't Drive High." It was funded by the National Highway Traffic Safety Administration.

Colorado Department of Transportation spokesman Sam Cole says the billboard is likely to make an impact, as its downtown location puts it within a mile's distance from six pot dispensaries and near several hotels.

State data shows 20 percent of DUI citations this year have involved marijuana use.