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Study on modeling and calculation method of length of safety siding for urban rapid rail transit

Safety siding of the urban rapid rail transit is a separate facility in station to prevent a train from entering a route occupied by another train. In the current Design Code of Urban Rapid Rail Transit in China, the effective length of safety siding shall be no less than 50m, with a rough specifications for a particular line. Based on the train braking model and the impact factors of the safety siding, the length calculation model is built. The result of the calculated length of safety siding of Dahe station is 55.69m, 0.96m shorter than the actual length, which verifies the feasibility of the calculation method.