The sign "Highway Inn" indicates the presence of a rest area or inn along the highway where drivers can stop for a break. This is typically a place where they can find facilities such as restrooms, food, and sometimes even lodging.

These rest areas are important for safety, as they provide drivers with the opportunity to take breaks and prevent fatigue during long journeys. It is advisable to take advantage of these stops to ensure safe driving practices.

If you have any additional questions about driving rules or other traffic signs, feel free to ask!