Centerline refers to a specific line that runs down the middle of a road or pathway, serving as a guide for drivers. It helps maintain order by indicating where vehicles should stay, ensuring safe travel in both directions. Centerlines can be solid or dashed, with solid lines typically indicating no passing zones. In various contexts, such as engineering or design, a centerline can also refer to an imaginary line that divides an object into equal halves. This concept is crucial for maintaining symmetry and balance in structures, products, and even in art compositions.