A digital billboard is a billboard that displays digital images that are changed by a computer every few seconds. Digital billboards are primarily used for advertising, but they can also serve public service purposes.
There have been concerns regarding road safety when digital billboards are present. The Federal Highway Administration (FHWA) conducted a study in 2001 to review the effects of electronic billboards (EBBs) on crash rates. According to the FHWA, it appeared that there was no effective technique or method appropriate for evaluating the safety effects of EBBs on driver attention or distraction at that time. More recent and extensive studies have affirmed the negative impact of digital billboards on driver attention.