What does a blue sign typically indicate?

Answer: B — Services for travelers

A blue sign typically indicates services for travelers. These signs are designed to provide important information about various services available on or near the roadway, which can include rest areas, gas stations, restaurants, and lodging. The use of blue is standardized in traffic signage to help drivers easily identify services that can assist them during their journey, particularly when they are on long trips or in unfamiliar areas. The other sign colors have specific meanings: for example, warning signs typically use yellow to indicate danger, while regulatory signs use colors like red or white to convey important rules that must be followed by drivers. Hospital signs usually feature a specific symbol or wording, often accompanied by blue, but they are primarily focused on healthcare facilities rather than general travel services. Understanding these distinctions is essential for navigating the road effectively and safely.