Real-time evaluation of an electric bus’s stability, focusing on four key stability factors: lateral stability, longitudinal stability, dynamic stability, and static stability. Electric buses offer distinct advantages over large-class buses due to their lower center of gravity, primarily attributed to the placement of heavy batteries. This feature significantly improves stability, particularly during cornering and abrupt maneuvers. However, real-time monitoring of these stability parameters is essential to prevent potential rollovers, ensuring operational safety in varying driving conditions. In this study, we compare the stability characteristics of electric buses with large-class and small-class buses, analyzing how the lower center of mass in electric buses contributes to superior handling. The research highlights that despite the inherent stability benefits, active control mechanisms are crucial for maintaining safety, especially under dynamic conditions. The paper presents methods for real-time stability assessment and proposes an online monitoring framework that allows continuous evaluation of these characteristics to optimize safety and performance. The findings emphasize the importance of real-time stability control in electric buses, offering a comparative analysis of the mentioned stability factors between electric buses, large-class buses, and small-class buses, and suggesting the integration of online monitoring systems to prevent instability and improve overall vehicle safety.