The invention discloses a
bus departure time optimization method based on a particle swarm and
plant rhizome optimization, and the method comprises the steps: building a multi-objective optimization model, and achieving the optimization of the
bus departure time by taking the minimization of the operation cost of a
bus company and the comprehensive
travel cost of passengers as well as the maximization of the net income of an enterprise and the direct passenger flow volume as objectives; in combination with dynamic conditions such as departure interval constraint, load factor limitation and adjacent period smoothness, global fast search is performed by adopting a
particle swarm algorithm, and a
plant rhizome optimization
algorithm is introduced to perform refined iterative solution; initializing a departure interval scheme through a
particle swarm algorithm, and generating a potential solution set; based on a
rhizome nutrient distribution mechanism, a
root growth process is simulated to dynamically adjust a departure strategy, complex constraints are restored, and a multi-target competition relationship is balanced; and finally, outputting a Pareto frontier solution set, and outputting an
optimal scheduling scheme. According to the invention, the direct passenger flow of the bus line can be effectively improved, the problems of passenger retention and social vehicle interference in peak periods are relieved, and the efficiency and service level of an urban
public transport system are remarkably enhanced.