What term describes the direction of approach and the maneuver made at the intersection?

The term that describes the direction of approach and the maneuver made at the intersection is "movement." In traffic engineering, "movement" refers specifically to the path that a vehicle takes when entering an intersection, which includes not only the direction from which it arrives but also the action it undertakes once it enters the intersection (such as turning left, turning right, or going straight). Understanding vehicle movements is crucial for effective traffic signal design and management, as it helps in predicting traffic patterns, optimizing signal timing, and ensuring the safety and efficiency of vehicular flow at intersections.

The other terms may describe related concepts but do not encapsulate the full scope of what is meant by vehicle movement. "Vehicle Position" typically refers to where a vehicle is located, "Traffic Flow" describes the overall pattern of vehicle movement in a roadway system, and "Intersection Approach" refers to the section of road where vehicles prepare to enter the intersection. While all these terms are interconnected in the context of trafficology, "movement" is the most precise in the context of describing both the approach direction and the actions taken by the vehicle upon entering the intersection.