Classicly

The primary objects have therefore been, to sketch briefly and simply the development of the transportation systems of the United States, to indicate their importance and mutual relations, to present some practical methods used in the operation of highway transport and to make occasional suggestions for the betterment of the road as a usable machine for the benefit and pleasure of mankind. 

The text is naturally divided into two parts—the development of highways and their use. The first part treats of the relation of transportation to civilization generally, explaining briefly how the two have grown together like children at school, how each has helped the other, and how the meter of one is the measure of the other.