What symbol is recommended to show the direction of travel after impact in the Field Diagram?

The recommended symbol to show the direction of travel after impact in the Field Diagram is an arrow. This choice is correct because arrows are universally understood as indicators of direction, providing a clear and straightforward representation of where vehicles were heading following a collision. Arrows effectively communicate movement and orientation, which is essential in accident reconstruction and documentation for analysis.

Using an arrow in a Field Diagram helps ensure that the diagram is easily interpretable for anyone reviewing it, including law enforcement, insurance companies, and legal professionals. It visually conveys the flow of traffic and the post-collision positions of the vehicles, which can be critical for understanding the dynamics leading to the accident. Dotted lines, solid lines, or circles may not offer the same clarity in indicating direction as arrows do.