Which of the following actions is NOT recommended at a crash scene?

Moving involved vehicles for clarity is not recommended at a crash scene because it can disrupt important evidence and alter the overall scene dynamics. Accident scenes often contain critical information related to the dynamics of the crash, such as skid marks, debris patterns, and the final resting positions of the vehicles. By moving the vehicles, this evidence may be lost or compromised, making it difficult for investigators to accurately analyze the circumstances that led to the accident.

In contrast, documenting witness statements, protecting evidence from being disturbed, and providing proper warnings for oncoming traffic are all essential actions to ensure a thorough investigation and maintain safety at the scene. Retaining the integrity of the scene is crucial for law enforcement and accident reconstruction professionals to effectively gather information that might be vital for legal and insurance purposes. Thus, preserving the scene as it is found, rather than altering it by moving vehicles, is a best practice in crash investigations.