The National Marker Company warning tape clearly informs personnel and pedestrians of a fire line and barricades them off for safety purpose. It is often used to ensure that the location of the fire is clearly marked to keep people away from danger. Such tapes are mostly used to warn pedestrians, visitors, employees, pedestrians, and even vehicles of potential hazards at a location. The legend “FIRE LINE DO NOT CROSS” is printed in bold and legible text to ensure clear visibility even in poor lighting conditions.