What transportation safety feature did Garrett Morgan patent due to car popularity?

Answer

traffic signal

Garrett Morgan patented the traffic signal as a direct consequence of the massive societal shift brought about by the automobile. As personal vehicles became widespread, they choked dense urban environments, creating complex flow management and safety hazards. The traffic signal was thus invented as a critical safety addition designed specifically to regulate the movement of this dramatically increased volume of vehicles on roads.

What transportation safety feature did Garrett Morgan patent due to car popularity?
inventiontransport