Which of the following is a safety measure when responding to vehicle crashes?

Using flares for traffic diversion is an essential safety measure when responding to vehicle crashes. Flares are designed to enhance visibility and alert oncoming traffic to the presence of an incident, thereby reducing the likelihood of secondary collisions. By positioning flares appropriately, responders can create a safer environment for both themselves and involved parties, as well as motorists approaching the scene.

Visibility is a critical factor in highway safety; flares serve as a warning signal that can catch the attention of drivers, prompting them to slow down and navigate safely around the scene of the crash. This proactive step can help to mitigate the risk of further accidents and ensure that emergency personnel can carry out their duties with reduced hazard.

The other options, while they may have some merit in certain contexts, do not address the immediate need for traffic management in the same effective way as using flares. Therefore, utilizing flares is a highly recognized and effective practice for improving safety during emergency response situations at vehicle crash scenes.