An employee was part of a crew that was placing stop bars, turn arrows, and crosswalks at an intersection. A vehicle entered the work zone and struck the thermoplastic handliner, which the crew was using to apply the roadway markings. The handliner is a small hand machine that uses molten thermoplastic (430 degrees F) to produce the markings. The impact of the vehicle on the handliner caused the molten material to splatter onto the injured employee, who suffered burns to the neck, right side of the face, and right ear.