The Big Apple shares an intriguing history in traffic control, and the once prevalent two-color stoplight directed everyone for a vast portion of the 20th century. Early pioneers in traffic management helped to develop the roads that make up New York City today, which continue to evolve in an ever-changing environment. The red and green traffic signals of years past intertwined with the significant advancements to tame motorists and pedestrians alike, and the untold story finally emerges to offer the reader a fascinating glimpse into the heart of the city that never sleeps.