American roadways are becoming increasingly complicated and crowded as varying types of motorists and pedestrians share space. Motorists and pedestrians now must pay attention to newer vehicles such as autonomous vehicles (AVs) and e-scooters. State and local governments are seeking ways to design and operate roadways to include connected and automated vehicles. Current simulation technologies are not designed for such complex scenarios. That is why the Federal Highway Administration’s (FHWA) Exploratory Advanced Research (EAR) Program is supporting two research projects which will help city planners, engineers, and other government officials to better plan the Nation’s future roadways.