What type of information does a blue sign provide?

Blue signs are primarily used to convey information related to driver services, which include amenities such as food, lodging, gas stations, and other services that can assist drivers during their travels. These signs are especially useful for travelers who may need to find essential services on long journeys or while navigating unfamiliar areas. They indicate that the driver can find resources that can enhance their travel experience and provide necessary breaks or convenience.

Regulatory information typically involves rules that drivers must follow, such as speed limits and no parking signs, while hazard warnings alert drivers to potential dangers ahead, such as curves or road work. Directional signs guide drivers to various destinations or indicate routes. Blue signs, however, distinctly focus on providing essential service-related information, making them a critical component of highway signage for travelers.