What does a blue road sign generally indicate?

A blue road sign typically indicates information or services available to travelers. These signs are used to provide guidance on various facilities such as rest areas, gas stations, hospitals, or lodging. The blue color is designated for these types of informative purposes, making it easier for drivers to recognize helpful resources while traveling.

In contrast, other colors are assigned different meanings—such as red for prohibitive signs (like speed limits) or yellow for cautionary messages about potential hazards or warnings. Therefore, understanding the specific meanings attached to different colored signs can greatly aid drivers in navigating efficiently and safely on the roads.