What does a blue traffic sign typically indicate?

A blue traffic sign primarily serves as a guide for drivers, indicating information about services and amenities available nearby. These signs direct motorists to essential locations such as hospitals, rest areas, gas stations, and lodging. The use of blue as a color for these types of signs ensures that they stand out and convey a sense of assistance or information, which is critical for drivers who may be looking for help or services.

While other colors like yellow or red are associated with warnings and regulations respectively, blue is distinct in its function of providing guidance. In this way, a blue sign acts as a helpful tool for navigation and finding necessary services, supporting driver needs on the road.