DANGER AUTHORIZED PERSONNEL ONLY - Prevent unauthorized personnel from entering dangerous areas by posting this sign. Sign keeps unauthorized personnel out of restricted areas and harm's way. Available in English, French, and Spanish to meet your specific needs. Bilingual signs help protect all your workers. Traditional OSHA-style signs, tags and labels are the most widely recognized design format in the industry. Danger header indicates a hazardous situation that, if not avoided, will result in death or serious injury.