Mohammad Mahdi Tahoorinia - Research & Development in Transportation Engineering, Mashhad Traffic and TransportationOrganization (MTTO),r
Zeinab Lotfalizadeh - BSc (Pure Mathematic.), Mathematic School, Ferdowsi University, Mashhad, Iran,
,Afshin Shariat Mohaymany - Associate Professor (Transportation Eng.), Civil Engineering School, Iran University of Science and Technology(IUST),Tehran, Iran

Designing feeder network system with modes by different capacities coveragemore area and provide the access to upper networks (such mass rapid transit). Inthis paper multimodal feeder network is designed by covering modessimultaneously and not focuing on its details. The main goal is to review theeffect of changing initial costs of the system (user, operator and social) whendesigning the network. The model that is used here has six parts and has beenoptimized by Ant Colony Optimization algorithm. Results show here byincreasing user cost, the length of the routes in the network will increased. Thiscause with lower headway the user waiting time is minimized. Additionallyincreasing the unit waiting and riding cost cause more willing to design networkby modes with higher utility functions.

public transit, optimization, multimodal feeder, ACO