Which pavement type typically consists of multiple layers, including a base course and a wearing course, to ensure strength and longevity?

• A. Asphalt pavement
• B. Bridge pavement
• C. Concrete pavement
• D. Specialized surface

Answer: (A)

Layered construction is used to make pavements strong and long-lasting. In flexible (asphalt) pavements, several layers work together: the wearing course is the top, durable surface that directly carries traffic and resists abrasion and weather. Beneath it lies the base course, which provides stiffness and helps distribute loads evenly to the subgrade, reducing deformation. There may also be a subbase and subgrade below. This combination of a base course plus a wearing course, plus supporting layers, is the hallmark of asphalt pavement and is what gives it both strength and a long service life. Concrete pavements, by contrast, are typically thick rigid slabs rather than a multi-layer system with distinct base and wearing courses.