The objective of this study is to propose an interactive training method based on the Unity 3D platform and to evaluate its effectiveness in comparison to a video-based training method in curbing speeding behavior and promoting road safety. Based on the attributes unique to drivers with Type A behavior patterns, this study selected 36 drivers with Type A personality and assigned them to one of two groups (the Unity-based training group, UTG; and the video-based training group, VTG). Moreover, a test questionnaire consisting of 20 items was designed to reveal the drivers' mastery of knowledge related to speeding behavior through training. The research preliminarily analyzes the effectiveness of the interactive training method based on Unity 3D platform to improve speed management behavior by assessing the effects of the groups (the UTG and the VTG), test sessions (baseline, 30 min post-training, and three days post-training), and the interactive effects of the two factors on the test questionnaire score, the frequency of speeding and (FS), the percentage of time speeding (PTS), and the mean speed based on the two-way repeated-measures ANOVA. The results demonstrated that the Unity-based training method was, to some extent, more effective than the passive video training method at mastering knowledge related to speeding behavior and improving speed management behavior. Specifically, FS and PTS were significantly lower for the UTG than the VTG at the 30 min post-training sessions (p < 0.01) and the three-day post-training sessions (p < 0.01).