How many marks are suggested for larger items?

For larger items involved in a traffic crash investigation, it is recommended to use two marks. This ensures that accurate reference points are established for the item, allowing investigators to create a more precise diagram of the scene. The additional mark provides a second reference that can help establish the orientation and location of the item relative to other evidence in the area.

Using two marks is especially important for larger items because they can occupy more space and may shift or be misinterpreted without sufficient points of reference. These marks serve to minimize discrepancies in the documentation and visualization of the crash scene, which is crucial for later analysis, legal proceedings, or insurance assessments.

In contrast, marking large items with one mark may not provide enough context or security for understanding their positioning, while three or four marks may be excessive and could complicate the documentation process without adding significant value. This understanding underscores the importance of precision in traffic crash investigations.