Low-frequency vibrations are the most harmful forces produced in public transport, which have many adverse effects on the human body, like imbalances, muscle pain, nausea, vomiting, and dizziness, and they often resemble motion sickness. These vibrations primarily arise from various sources, such as road irregularities and moving mechanical components in vehicles. This article focuses on buses, which make up a significant portion of public transport in India. A 3D CAD multi-degree of freedom vibratory model weighing 65 kg of an Indian male is made according to a survey by NIN (Channel in National institute of nutrition changes average weight, height measurements for Indian men and women, 2020 [1]) in three different standing postures. Modal and harmonic analyses are carried out to identify the damping behavior and modal frequency of the model. Also, FEM random vibration analysis with frequency domain excitation is carried out to obtain frequency responses at the head. For the identification and comparison of the posture, feet-to-head transmissibility and vertical deformation at the head are considered. From this study, it is observed that the most harmful position while traveling on a bus is standing normally without any support, while the most comfortable and less vulnerable compared to the other two postures is standing with an extended hand holding the handrail.