What color of guide signs tells you about nearby services like food, gas, lodging, hospitals, and police stations?

Blue

Explanation:

Road signs on the road come in many various shapes and colors. Traffic signs serve important purpose as to keep all the drivers safe. Each color signifies the different action or the reference.

Blue: This color is used for the guide signs. The signs tell about the services along roadway such as hospitals, rest areas, lodging and gas stations.