The response of the peak vertical acceleration and longitudinal deceleration of the car body were examined to analyze the ride comfort of high-speed trains during braking. Multi-body dynamic simulation based on a fixed reference coordinate system was adopted to enable the application of braking torque as an input that can generate a speed profile as an output. Three different high-speed train specifications were considered in this study. Various braking torque values were applied directly to the wheelset of the train and the risk of skid was also taken into account. Higher brake torque produces higher peak vertical acceleration and longitudinal deceleration, but the response is constant once the input braking torque causes the train to skid. The optimum brake torque has to be determined to maintain lower peak vertical acceleration as well as a short distance and time to stop the train. The specification of the train including mass and suspension parameters also affect the response of the car body acceleration.