original: a road number is often assigned to a stretch of public roadway .
simplifications: a number is often given to a piece of public road . all public roadways are assigned with a number . a road number is usually given to a long area of a public roadway . a road number is often given to an area of public roads . a road number is often assigned to a stretch of public roadway . each section of road usually has a certain number it is called . a road number is often assigned to a stretch of public roadway . a road number is often given a stretch of public roadway .