Public transportation is the central nervous system of every major city's public life. Think about the Metro in France, the Underground in London and, of course, the Subway in New York. With COVID 19 forcing a change in the way we interact with each other, public transportation has been drastically affected. In the post-pandemic world, the newly developed need to minimize the risk of infection in public spaces will increase the demand for smart transportation systems. Since public transportation systems are highly vulnerable to disease outbreaks, adopting digital technologies such as artificial intelligence (AI) and the Internet of Things (IoT) can play a key role in balancing operations with public safety measures for monitoring spread and taking corrective action at points of critical impact.