In addition, the Township and Range Survey System is not found everywhere in the country. In New England, along the Atlantic coast, and in all or parts of Florida, Texas, and California - the system is not found. These are areas already settled at the time of the passing of the law. and consequently modified whatever survey practices were already in use. The Spanish especially had systems of their own in parts of the United States where they had settled. Much of the transportation infrastructure in our country follows the lines laid down by this survey.
Many major highways follow the tier and range lines and minor highways follow the section lines.
In fact, I had a student who was also a pilot in class several years ago. All of this helped him calculate both direction and speed. The fact of roads following this system is especially highlighted by roads having jogs at correction lines. Political townships, as mentioned, frequently were superimposed over existing survey townships. These places formed the foundation of urban hierarchies in America - small places that were evenly distributed across the landscape at six miles apart.