What is a primary reason for documenting weather conditions at the time of an accident?

Documenting weather conditions at the time of an accident is vital because these conditions can significantly impact vehicle operation and visibility. Factors such as rain, snow, fog, or icy roads can alter how a vehicle reacts and how drivers respond to their surroundings. For instance, wet or icy roads can cause vehicles to skid, while fog can reduce visibility, leading to accidents. By recording the weather at the time of the incident, investigators can better understand the context of the accident and determine what influence, if any, the weather had on the behavior of the vehicles involved and the decisions made by the drivers. This information can be crucial in forming an accurate picture of the accident dynamics.