What does it indicate if a traffic sign is blue?

A blue traffic sign conveys information related to services or guidance, which can include directions to services such as hospitals, gas stations, or rest areas. This color is used to guide drivers and provide them with vital information about available amenities, ensuring they can make informed decisions as they travel.

In contrast, warning signs are typically yellow, stop requirements are conveyed by red signs, and speed limits are indicated using white signs with black numbers. Each of these colors is standardized to help drivers quickly recognize the nature of the sign and the action required. The use of blue specifically for service-related information helps differentiate it from other types of signs, creating a clear visual cue on the road.