What does a "narrow bridge" sign look like?

A "narrow bridge" sign is indicated by a yellow diamond shape. This sign serves as a warning to drivers that they are approaching a bridge that may not be wide enough to accommodate two vehicles passing each other safely. The yellow color is used to signify caution, alerting drivers to potential hazards ahead.

In addition, the diamond shape of the sign is standardized for warning signs, which helps to quickly convey important information about road conditions. Recognizing the shape and color of warning signs is crucial for safe driving, especially in areas where reduced width may affect maneuvering and passing. The other choices do not correctly represent warning signs; for instance, red rectangles are typically used for regulatory signs, green circles often indicate directional information or guidance, and blue rectangles are typically used for service signs.