What does a blue sign typically indicate?

A blue sign typically indicates information about services available to travelers. These signs provide guidance regarding nearby amenities such as gas stations, restaurants, hospitals, and lodging. This helps drivers and passengers find essential services they may need while on the road, enhancing their travel experience and safety.

In contrast, warning signs about road conditions are usually yellow, while speed limits are indicated with regulatory signs that are generally white and black. Directional information often appears on green or brown signs, which are designated for direction and guidance related to recreation and points of interest, respectively.