Final answer:
The statement about interstate highway signs with larger, odd numbers going east/west is false; odd-numbered interstates run north/south while even-numbered ones run east/west.
Step-by-step explanation:
The statement that interstate highway signs with larger, odd numbers go in an east/west direction in the southern part of the United States is false. In the United States interstate highway system, even-numbered interstates run east/west while odd-numbered interstates run north/south. This rule applies across the entire country, not just the southern part. Therefore, regardless of whether the interstate is in the northern or southern part of the country, if it has an odd number, it runs north/south, contrary to the statement provided in the question.