Abstract: According to transit network characteristics, transit network is systematically described in this paper. A bilevel programming model for transit network design problem is presented, in which the upper model is a normal transit network design mode l, and the lower model is a transit stochastic equilibrium assignment model. A heuristic solution algorithm based on sensitivity analysis is designed for the model proposed. Finally, a simple example is given to illustrate the application of the model and algorithm suggested.

Key words: bilevel programming, sensitivity analysis, stochastic assignment, heuristic algorithm, frequency optimization