This chapter discusses the legal regimes for regulating automated and autonomous vehicles (AVs) across selected jurisdictions (To maintain consistency throughout this chapter, we use the term "AVs" to refer to vehicles equipped with systems that automate driving highly or fully (Levels 4 and 5 in the SAE taxonomy). Other terms are also used to refer to this technology (e.g., "self-driving," "intelligent and connected") which may vary by jurisdiction). Findings are drawn primarily from RAND research and an ARTS 2023 breakout session that provided an overview and discussion of the current state of AV deployment and regulation in various jurisdictions. The chapter highlights seven areas of AV legal regimes that offer rich comparisons: regulatory focus on safety, assignment of liability, influence of SAE definitions, testing and government oversight, concerns with data, equity, and deployment models. The chapter explores how different legal regimes are balancing competing interests and discusses potential policy considerations and implications for public welfare.