original: A road number is often assigned to a stretch of public roadway.
simplifications: A road number is often given to a part of roadway. A road number is usually set to a public roadway. Public roadways can have appointed numbers. A road number is often given to a stretch of public roadway. A road number is often given to an area of public roadway. Roads that are open to the public are often given a number to identify them. Public stretches of road are usually assigned numbers. A road number is often given to stretches of public roads. A road number is given to a piece of public roadway. A road number is often assigned to a public road section.