Switched from Construction/Engineering Grade sheeting to High-Intensity sheeting for barrels and barricades

North Carolina DOT requires Engineering Grade sheeting for drums and barricades. In addition, North Carolina requires three orange and two white stripes on drums. The MUTCD requires only two orange and two white stripes. With the third orange stripe requirement, NCDOT can cover a drum with Engineering Grade sheeting from top to bottom for half the cost of two orange and two white high-intensity stripes.