What is the main characteristic of a controlled position in collision investigations?

The main characteristic of a controlled position in collision investigations is that the vehicle has been intentionally moved to clear traffic. In the context of crash investigations, a controlled position indicates that after a collision, vehicles may be relocated deliberately to facilitate the flow of traffic or to ensure safety at the scene, especially when they obstruct roadways. This action allows investigators to analyze the incident without further risk to other road users, and it can also help in preserving evidence for the investigation.

The other scenarios, such as the vehicle being stationary and undamaged or reaching its position unintentionally, do not convey the active decision-making involved in moving a vehicle to a controlled position. Relocating a vehicle away from the scene, while sometimes necessary, does not specifically imply that it is being moved to clear traffic, nor does it address the intentional aspect that characterizes controlled positions during crash analyses.