Road Work Ahead Sign - Meaning and Safety Guidelines #1787579 (License: Personal Use)

The image shows a standardized U.S. MUTCD (Manual on Uniform Traffic Control Devices) W21-1 sign: a black silhouette of a person shoveling within a yellow diamond (here shown in monochrome). It alerts motorists to construction zones where workers are present, often accompanied by temporary traffic controls. The sign is typically placed several hundred feet before the work area to allow safe deceleration.

Used on highways, urban streets, and rural roads to warn drivers of construction zones; matches user intent for understanding traffic signage, preparing for travel delays, or driver education resources.