Objective Small numbered turnouts are widely used in urban rail transit. especially in metro depots. but their large switch angles pose a derailment risk when vehicles pass through them. It is necessary to investigate the reasons for vehicle derailment at the turnout frog positions in metro depot. https://www.diegojavierfares.com/limited-time-Florida-Gators-NCAA-Mens-Highlights-Swimming-Trunks-p19075-limited-choice/