Dagny Taggart is a central character in Ayn Rand's novel, "Atlas Shrugged." She serves as the Vice President of Operations for Taggart Transcontinental, a major railroad company. Dagny is portrayed as a strong, independent woman who is dedicated to her work and believes in the importance of individual achievement and innovation. Throughout the story, Dagny struggles against a society that increasingly stifles creativity and productivity. She seeks to maintain the integrity of her railroad while navigating challenges posed by government regulations and the decline of industrialism. Her character embodies the themes of rational self-interest and the value of hard work.