The National Marker Company sign clearly alerts workers or employees to stop at a particular point in a facility or location. It is mostly used at construction sites, road crossings, and industrial facilities to deter people from entering a hazardous area. The legend “STOP” is printed in bold and legible text to ensure clear visibility in poor lighting conditions and even from a distance. Such signs are used to communicate the safety message to visitors and employees as soon as they enter a facility. The bold visuals contain pictograms, messages and colors to make the message easily understandable.