The traffic signal is an important invention in Black history, credited to Garrett Morgan, an African American inventor and entrepreneur. In 1923, Morgan patented an early version of the traffic signal that included a warning light to alert drivers before the signal changed. This invention helped improve road safety and reduce accidents by regulating the flow of traffic.

Morgan's design was a significant advancement in traffic control technology and is still the basis for modern traffic signals used today. His innovation paved the way for improved transportation systems and infrastructure in cities around the world.

Garrett Morgan's contributions to traffic safety and management demonstrate the ingenuity and creativity of African American inventors who have made significant contributions to society.