What shape are guide signs?

Answer: C — Rectangular

Guide signs are rectangular in shape, which makes them easily recognizable on the roadway. This shape is used to indicate directions or inform drivers about services and points of interest along the road, such as airports, hospitals, and gas stations. The rectangular design helps ensure that these important driving aids stand out to motorists, providing clear and concise information. While other shapes like triangular or diamond-shaped signs serve specific functions, such as warnings or indicating hazards, the rectangular shape uniquely identifies guide signs, facilitating safer navigation for drivers by presenting vital information in a straightforward manner.