Blue traffic signs offer information on:

Motorist services.
Construction and maintenance.
Mileage information, such as distances to specific locations.
The Correct Answer and Explanation is :
The correct answer is Motorist services.
Blue traffic signs are used to indicate motorist services along the road. These services include essential facilities and locations that drivers may need to access during their travels, such as gas stations, restaurants, lodging, rest areas, and hospitals. These signs are designed to help drivers identify services that are readily available to them while they are on the road.
In the image you provided, the blue sign shows a typical example of these services. For example, a sign with a symbol of a gas pump indicates the presence of a fuel station, while a symbol of a bed might indicate a nearby hotel or motel. These signs are helpful for drivers, particularly in unfamiliar areas or on long trips, as they provide vital information about where to find necessary services.
While blue signs are used for motorist services, other types of traffic signs are used to indicate different types of information:
- Construction and maintenance: These signs are typically orange and are used to warn drivers about upcoming construction zones or roadwork. They help ensure safety by alerting drivers to slow down, detour, or follow specific instructions to navigate through work areas.
- Mileage information: Signs showing distances to specific locations, such as cities or points of interest, are often green. These are directional signs that help drivers understand how far they are from their destination and when to expect to arrive.
In summary, blue traffic signs specifically offer information on motorist services such as fuel, food, lodging, and other travel-related amenities. These signs are essential for making long-distance travel more convenient and ensuring that drivers can access important services when needed.