According to regulatory focus theory (Higgins, 1997), promotion focus is concerned with accomplishments and aspirations leading to strategic eagerness; whereas prevention focus is concerned with safety and responsibilities leading to strategic vigilance. In this study, we investigate how regulatory focus theory can predict braking behavior in driving. In Study 1, participants' assessed regulatory focus strength as measured by chronic personality differences in regulatory focus predicted braking speed, in that chronic prevention-oriented participants initiated braking earlier, as compared to promotion-oriented people. In Study 2, we experimentally induced regulatory focus and showed that induced prevention focus enhanced braking speed (i.e., faster), as compared to induced promotion focus.