Autonomous vehicles, such as cars and vessels, will be widespread in our daily lives, aiming at reducing pollution while improving traffic efficiency and safety. However, there are urgent societal concerns about the capabilities of autonomous vehicles to interact safely with non-autonomous vehicles (e.g., operated by humans) in mixed traffic conditions, and handle unexpected events, such as faults, without causing disruptions or jeopardizing human safety. The goal of my research within SCoop (Safe Cooperation of Autonomous Vehicles in Mixed-Traffic) is to design a cooperation framework that allows autonomous vehicles to safely navigate in mixed traffic even in the presence of faults.