SIGN END ROAD WORK 48x24 ACM B/O DG G20-2(1). The end road work signal must be placed near the downstream end of the TTC zone, as determined by engineering judgment. This sign is a horizontal rectangle with a black caption and border on an orange background. It has a retro-reflective sign that is visible day and night. Furthermore, it is manufactured in durable and weather resistant traffic grade aluminum and pre-drilled with rounded corners and 3/8" mounting holes.