What is the purpose of conducting a traffic study during highway planning?

Answer: B — To understand current and projected traffic patterns

Conducting a traffic study during highway planning is crucial for understanding current and projected traffic patterns. This involves analyzing how vehicles move through an area, identifying peak traffic times, and forecasting future traffic behavior based on factors such as population growth and economic changes. Understanding these patterns allows planners to make informed decisions about roadway design, capacity, and needed improvements to ensure that traffic flow is efficient and safe. It helps in determining the appropriate number of lanes, traffic signals, and other necessary infrastructure to accommodate both current demands and anticipated growth over time. This foundational knowledge directly impacts the project's overall effectiveness in meeting public transportation needs and reducing congestion. While other options may touch on relevant aspects of highway planning, they do not specifically relate to the primary objective of analyzing traffic conditions and future needs, which is addressed through a traffic study.