Traditional roadside billboards have gone high-tech in the early 21st century. Digital billboards are becoming more popular due to their eye-catching LED screens and their ability to produce more advertising[advertising?:advertising material cutting machine] revenue for billboard companies.
Digital billboards are computerized signs that typically display a rotating series of advertisements. Each ad appears for a few seconds at a time. The billboard is often controlled by a computer that may be in a different city than the billboard itself.
Digital billboards can cost several hundred thousand dollars to construct and can weigh 3,000 lbs. to 4,000 lbs., while traditional billboards typically weigh only about 500 lbs. Digital billboards can contain more than 400,000 small light diodes.
