Abstract:Aiming at the problem that the rationality of the calculation result of railway longitudinal section simplification needs to be verified, a railway longitudinal section simplification algorithm based on DP (Dynamic Programming, Dynamic Programming) was proposed in this paper. The algorithm aimed at optimizing the train tracking interval, considered the requirements for railway longitudinal section simplification, combined the train interval tracking operation model to simulate train operation, and used multi-stage optimal decision-making to solve the problem of railway longitudinal section simplification. The simulation results show that the algorithm can achieve the railway longitudinal section simplification, and meets the relevant regulations of railway longitudinal section simplification in the " Truck Traction Calculation Regulations ", can reduce the interval tracking time, and suitable for practical applications achieve automatic railway longitudinal section simplification.