In terms of road surface types, what is NOT typically found on roadways?

The focus of the question is on materials that are commonly used for road surfaces. While asphalt, bricks, and even concrete are widely used in modern roadway construction due to their durability and strength, sand is not a material typically utilized for road surfaces.

Asphalt is a prevalent choice for paving roads because it provides a smooth, durable surface that can withstand heavy traffic and various weather conditions. Bricks, though less common for entire roadways, are still used in certain areas, particularly for decorative or historical purposes. Clay, while not a standard surface for roads, can be found in some unpaved roads or rural settings but is generally not considered a reliable material for typical roadway surfaces.

In contrast, sand lacks the structural integrity necessary to support vehicular loads and can easily be displaced by weather conditions or traffic, making it impractical as a roadway material. This is why it is the correct choice as it does not belong to the group of materials typically found on roadways.