The invention of the traffic signal is credited to Garrett Morgan, an African American inventor and entrepreneur. In 1923, Morgan patented his invention of the three-position traffic signal, which included a warning light to alert drivers before the signal changed. This innovation helped to improve road safety and reduce traffic accidents.

Garrett Morgan faced many challenges and discrimination as a Black inventor during his time, but his contributions to traffic safety have had a lasting impact on modern transportation systems. His invention paved the way for the development of more sophisticated traffic signals and systems that are now used around the world.

Morgan's legacy as an inventor and entrepreneur is an important part of Black history, highlighting the significant contributions that African Americans have made to various fields, including technology and transportation.