Policy design and tools to achieve particular goals

Chapter 9 discusses policy design and tools to achieve particular goals. For this essay, I want you to consider a policy issue that has not yet been successfully resolved (if you have trouble thinking of anything, I would propose this topic: How should we ensure that self-driving cars are safe?).
For your issue, I want you to propose several different policy approaches that could be used to address the issue – try to come up with policy ideas that are pretty different from each other. What are the goals related to this issue and how might they conflict? What types of policy tools seem potentially useful? How efficient and effective are these different approaches?