Robot intelligence architecture has advanced from action intelligence to autonomous intelligence, whereby robots can adapt to complex environments and interact with humans. This technology, considered central to next generation robots (NGRs), will become increasingly visible in many human service scenarios in the next two decades. Accordingly, there is an emerging need to predict and address intertwined technological and legal issues that will arise once NGRs become more commonplace. Safety issues will be of particular interest from a legal viewpoint. As robots become more capable of autonomous behavior, regulations associated with industrial robots will no longer be effective. In this paper we will discuss issues associated with autonomous robot behavior regulations associated with the concept of safety intelligence (SI). We believe the SI concept (one of several robot sociability problems) is crucial to the development of "robot law" that will accompany the establishment of a society in which humans and robots co-exist.