How do the edges of new glass on the roadway appear?

The edges of new glass on the roadway appear sharp due to the way the glass is broken. When glass shatters, it often fractures in a manner that creates jagged or sharp edges. These sharp edges are a result of the physical properties of glass, which do not have the capacity to round or smooth out immediately upon breaking.

While some glass may become polished over time due to abrasion from traffic or weathering, newly broken glass retains its sharp characteristics. Rounded edges would indicate that the glass has been tumbled or subjected to extensive wear, which is typically not the case for freshly shattered glass on the roadway. Frayed edges are more commonly associated with materials like fabric rather than glass. Hence, the appearance of sharp edges is a clear and immediate visual characteristic of new glass on the road.