Against the limitation of traditional methods for transit network optimization,a mathematical model is presented aiming to maximize the direct passenger flow density.

Then it introduces the optimization planning method of bus line depending on the subway network and subway station,and provides the calculation method of transfer facility area such as bus stops,waiting corridor,loading area and so on.

Planning method of Beijing future public transit network based on small world network;

The planning of public transit network in small-and-medium-size cities based on graphics theory;

Study on the Planning Method in Guiyang Public Transit Network;

On the basis of considering each factor of urban public traffic line network,the decision-making method for the optimization of urban public traffic line network is set up by grey theory and fuzzy theory.

A new method of public traffic line network optimization is presented by particle swarm algorithm.

With Huai’an economic development, urbanization accelerates, the size of cities in the expansion, the new residential building, former Huai’an urban public traffic line network is not adapt to the new changing, so public transport efficiency drop, new regional has little or no public transport links and other issues.