Road flare

A road flare is a device used by emergency personnel as well as private citizens. Paramedics and law-enforcement officers may ignite flares and placed them on a road to ward off passing traffic from an incident such as an automobile accident or a crime scene.

In Friday the 13th Part V: A New Beginning, deranged psycho-killer Roy Burns used a lit road flare and shoved it into the mouth of a motorist named Vinnie in order to kill him.

Films

 * Friday the 13th Part V: A New Beginning